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#1
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Auto Tuner
Does anyone know how auto tuners work - as in the box that you play a note
to, and it tells you what note you are playing, and whether or not it is in tune? I am trying to write some musical transcription software for my final year project, and thought that modelling an autotuner's functionality may be the best way to go about this - as opposed to the more traditional windowing and fft-ing approach. Thanks in advance, John |
#2
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Auto Tuner
Does anyone know how auto tuners work - as in the box that you play a note
to, and it tells you what note you are playing, and whether or not it is in tune? I am trying to write some musical transcription software for my final year project, and thought that modelling an autotuner's functionality may be the best way to go about this - as opposed to the more traditional windowing and fft-ing approach. If it only has to handle a relatively narrow frequency range (a few octaves), and doesn't have a lot of noise to content with, then it'd probably be possible to use a phase-locked loop (and translate the resulting control voltage to a note value), or to feed the signal into a Schmitt trigger and then count the number of zero-crossings per second. -- Dave Platt AE6EO Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads! |
#3
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Auto Tuner
Does anyone know how auto tuners work - as in the box that you play a note
to, and it tells you what note you are playing, and whether or not it is in tune? I am trying to write some musical transcription software for my final year project, and thought that modelling an autotuner's functionality may be the best way to go about this - as opposed to the more traditional windowing and fft-ing approach. If it only has to handle a relatively narrow frequency range (a few octaves), and doesn't have a lot of noise to content with, then it'd probably be possible to use a phase-locked loop (and translate the resulting control voltage to a note value), or to feed the signal into a Schmitt trigger and then count the number of zero-crossings per second. -- Dave Platt AE6EO Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads! |
#4
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Auto Tuner
Does anyone know how auto tuners work - as in the box that you play a note
to, and it tells you what note you are playing, and whether or not it is in tune? I am trying to write some musical transcription software for my final year project, and thought that modelling an autotuner's functionality may be the best way to go about this - as opposed to the more traditional windowing and fft-ing approach. If it only has to handle a relatively narrow frequency range (a few octaves), and doesn't have a lot of noise to content with, then it'd probably be possible to use a phase-locked loop (and translate the resulting control voltage to a note value), or to feed the signal into a Schmitt trigger and then count the number of zero-crossings per second. -- Dave Platt AE6EO Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads! |
#5
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Auto Tuner
Does anyone know how auto tuners work - as in the box that you play a note
to, and it tells you what note you are playing, and whether or not it is in tune? I am trying to write some musical transcription software for my final year project, and thought that modelling an autotuner's functionality may be the best way to go about this - as opposed to the more traditional windowing and fft-ing approach. If it only has to handle a relatively narrow frequency range (a few octaves), and doesn't have a lot of noise to content with, then it'd probably be possible to use a phase-locked loop (and translate the resulting control voltage to a note value), or to feed the signal into a Schmitt trigger and then count the number of zero-crossings per second. -- Dave Platt AE6EO Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads! |
#6
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Auto Tuner
In simple terms, it would have a type of set of frequency band pass
circuits. The outputs are measured, and then translated to display using some logic circuits of types. Another approach would be to use a frequency counter, and from the values measured, follow a scaling to display the results. In anycase, these instruments can be fairly sophisticated internally in comparison to how simple they look. -- Greetings, Jerry Greenberg GLG Technologies GLG ========================================= WebPage http://www.zoom-one.com Electronics http://www.zoom-one.com/electron.htm ========================================= "John Bevan" wrote in message ... Does anyone know how auto tuners work - as in the box that you play a note to, and it tells you what note you are playing, and whether or not it is in tune? I am trying to write some musical transcription software for my final year project, and thought that modelling an autotuner's functionality may be the best way to go about this - as opposed to the more traditional windowing and fft-ing approach. Thanks in advance, John |
#7
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Auto Tuner
In simple terms, it would have a type of set of frequency band pass
circuits. The outputs are measured, and then translated to display using some logic circuits of types. Another approach would be to use a frequency counter, and from the values measured, follow a scaling to display the results. In anycase, these instruments can be fairly sophisticated internally in comparison to how simple they look. -- Greetings, Jerry Greenberg GLG Technologies GLG ========================================= WebPage http://www.zoom-one.com Electronics http://www.zoom-one.com/electron.htm ========================================= "John Bevan" wrote in message ... Does anyone know how auto tuners work - as in the box that you play a note to, and it tells you what note you are playing, and whether or not it is in tune? I am trying to write some musical transcription software for my final year project, and thought that modelling an autotuner's functionality may be the best way to go about this - as opposed to the more traditional windowing and fft-ing approach. Thanks in advance, John |
#8
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Auto Tuner
In simple terms, it would have a type of set of frequency band pass
circuits. The outputs are measured, and then translated to display using some logic circuits of types. Another approach would be to use a frequency counter, and from the values measured, follow a scaling to display the results. In anycase, these instruments can be fairly sophisticated internally in comparison to how simple they look. -- Greetings, Jerry Greenberg GLG Technologies GLG ========================================= WebPage http://www.zoom-one.com Electronics http://www.zoom-one.com/electron.htm ========================================= "John Bevan" wrote in message ... Does anyone know how auto tuners work - as in the box that you play a note to, and it tells you what note you are playing, and whether or not it is in tune? I am trying to write some musical transcription software for my final year project, and thought that modelling an autotuner's functionality may be the best way to go about this - as opposed to the more traditional windowing and fft-ing approach. Thanks in advance, John |
#9
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Auto Tuner
In simple terms, it would have a type of set of frequency band pass
circuits. The outputs are measured, and then translated to display using some logic circuits of types. Another approach would be to use a frequency counter, and from the values measured, follow a scaling to display the results. In anycase, these instruments can be fairly sophisticated internally in comparison to how simple they look. -- Greetings, Jerry Greenberg GLG Technologies GLG ========================================= WebPage http://www.zoom-one.com Electronics http://www.zoom-one.com/electron.htm ========================================= "John Bevan" wrote in message ... Does anyone know how auto tuners work - as in the box that you play a note to, and it tells you what note you are playing, and whether or not it is in tune? I am trying to write some musical transcription software for my final year project, and thought that modelling an autotuner's functionality may be the best way to go about this - as opposed to the more traditional windowing and fft-ing approach. Thanks in advance, John |
#10
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Auto Tuner
"John Bevan" wrote ...
Does anyone know how auto tuners work - as in the box that you play a note to, and it tells you what note you are playing, and whether or not it is in tune? I am trying to write some musical transcription software for my final year project, and thought that modelling an autotuner's functionality may be the best way to go about this - as opposed to the more traditional windowing and fft-ing approach. My guess is that most modern ones are digital and use conventional frequency-counting. Quartz crystals (for frequency reference) cost only a fraction of a USD/GBP in consumer production quantities. OTOH, if you are doing this in software with what is coming from a sound card in a computer, fft may very well be the optimal (easiest/fastest) method. You don't have the same paradigm as designers of small hand-held pieces of HARD- ware. |
#11
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Auto Tuner
"John Bevan" wrote ...
Does anyone know how auto tuners work - as in the box that you play a note to, and it tells you what note you are playing, and whether or not it is in tune? I am trying to write some musical transcription software for my final year project, and thought that modelling an autotuner's functionality may be the best way to go about this - as opposed to the more traditional windowing and fft-ing approach. My guess is that most modern ones are digital and use conventional frequency-counting. Quartz crystals (for frequency reference) cost only a fraction of a USD/GBP in consumer production quantities. OTOH, if you are doing this in software with what is coming from a sound card in a computer, fft may very well be the optimal (easiest/fastest) method. You don't have the same paradigm as designers of small hand-held pieces of HARD- ware. |
#12
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Auto Tuner
"John Bevan" wrote ...
Does anyone know how auto tuners work - as in the box that you play a note to, and it tells you what note you are playing, and whether or not it is in tune? I am trying to write some musical transcription software for my final year project, and thought that modelling an autotuner's functionality may be the best way to go about this - as opposed to the more traditional windowing and fft-ing approach. My guess is that most modern ones are digital and use conventional frequency-counting. Quartz crystals (for frequency reference) cost only a fraction of a USD/GBP in consumer production quantities. OTOH, if you are doing this in software with what is coming from a sound card in a computer, fft may very well be the optimal (easiest/fastest) method. You don't have the same paradigm as designers of small hand-held pieces of HARD- ware. |
#13
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Auto Tuner
"John Bevan" wrote ...
Does anyone know how auto tuners work - as in the box that you play a note to, and it tells you what note you are playing, and whether or not it is in tune? I am trying to write some musical transcription software for my final year project, and thought that modelling an autotuner's functionality may be the best way to go about this - as opposed to the more traditional windowing and fft-ing approach. My guess is that most modern ones are digital and use conventional frequency-counting. Quartz crystals (for frequency reference) cost only a fraction of a USD/GBP in consumer production quantities. OTOH, if you are doing this in software with what is coming from a sound card in a computer, fft may very well be the optimal (easiest/fastest) method. You don't have the same paradigm as designers of small hand-held pieces of HARD- ware. |
#14
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Auto Tuner
Hi Guys,
thanks for all of your responses. I writing software to do the transcription, and have already started coding using an FFT, but then realised that auto-tuners seemed to be far more accurate than any of the similar software I have found so far. Perhaps this is simply because the tuner is held near to the instrument, so noise is less of an issue, but I thought it may be worth checking to see if there was a really simple solution that had never occoured to others working in the DSP domain. Thanks again for all your replies. John "Richard Crowley" wrote in message ... "John Bevan" wrote ... Does anyone know how auto tuners work - as in the box that you play a note to, and it tells you what note you are playing, and whether or not it is in tune? I am trying to write some musical transcription software for my final year project, and thought that modelling an autotuner's functionality may be the best way to go about this - as opposed to the more traditional windowing and fft-ing approach. My guess is that most modern ones are digital and use conventional frequency-counting. Quartz crystals (for frequency reference) cost only a fraction of a USD/GBP in consumer production quantities. OTOH, if you are doing this in software with what is coming from a sound card in a computer, fft may very well be the optimal (easiest/fastest) method. You don't have the same paradigm as designers of small hand-held pieces of HARD- ware. |
#15
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Auto Tuner
Hi Guys,
thanks for all of your responses. I writing software to do the transcription, and have already started coding using an FFT, but then realised that auto-tuners seemed to be far more accurate than any of the similar software I have found so far. Perhaps this is simply because the tuner is held near to the instrument, so noise is less of an issue, but I thought it may be worth checking to see if there was a really simple solution that had never occoured to others working in the DSP domain. Thanks again for all your replies. John "Richard Crowley" wrote in message ... "John Bevan" wrote ... Does anyone know how auto tuners work - as in the box that you play a note to, and it tells you what note you are playing, and whether or not it is in tune? I am trying to write some musical transcription software for my final year project, and thought that modelling an autotuner's functionality may be the best way to go about this - as opposed to the more traditional windowing and fft-ing approach. My guess is that most modern ones are digital and use conventional frequency-counting. Quartz crystals (for frequency reference) cost only a fraction of a USD/GBP in consumer production quantities. OTOH, if you are doing this in software with what is coming from a sound card in a computer, fft may very well be the optimal (easiest/fastest) method. You don't have the same paradigm as designers of small hand-held pieces of HARD- ware. |
#16
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Auto Tuner
Hi Guys,
thanks for all of your responses. I writing software to do the transcription, and have already started coding using an FFT, but then realised that auto-tuners seemed to be far more accurate than any of the similar software I have found so far. Perhaps this is simply because the tuner is held near to the instrument, so noise is less of an issue, but I thought it may be worth checking to see if there was a really simple solution that had never occoured to others working in the DSP domain. Thanks again for all your replies. John "Richard Crowley" wrote in message ... "John Bevan" wrote ... Does anyone know how auto tuners work - as in the box that you play a note to, and it tells you what note you are playing, and whether or not it is in tune? I am trying to write some musical transcription software for my final year project, and thought that modelling an autotuner's functionality may be the best way to go about this - as opposed to the more traditional windowing and fft-ing approach. My guess is that most modern ones are digital and use conventional frequency-counting. Quartz crystals (for frequency reference) cost only a fraction of a USD/GBP in consumer production quantities. OTOH, if you are doing this in software with what is coming from a sound card in a computer, fft may very well be the optimal (easiest/fastest) method. You don't have the same paradigm as designers of small hand-held pieces of HARD- ware. |
#17
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Auto Tuner
Hi Guys,
thanks for all of your responses. I writing software to do the transcription, and have already started coding using an FFT, but then realised that auto-tuners seemed to be far more accurate than any of the similar software I have found so far. Perhaps this is simply because the tuner is held near to the instrument, so noise is less of an issue, but I thought it may be worth checking to see if there was a really simple solution that had never occoured to others working in the DSP domain. Thanks again for all your replies. John "Richard Crowley" wrote in message ... "John Bevan" wrote ... Does anyone know how auto tuners work - as in the box that you play a note to, and it tells you what note you are playing, and whether or not it is in tune? I am trying to write some musical transcription software for my final year project, and thought that modelling an autotuner's functionality may be the best way to go about this - as opposed to the more traditional windowing and fft-ing approach. My guess is that most modern ones are digital and use conventional frequency-counting. Quartz crystals (for frequency reference) cost only a fraction of a USD/GBP in consumer production quantities. OTOH, if you are doing this in software with what is coming from a sound card in a computer, fft may very well be the optimal (easiest/fastest) method. You don't have the same paradigm as designers of small hand-held pieces of HARD- ware. |
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