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#1
Posted to rec.audio.opinion,rec.audio.tech,comp.compression,microsoft.public.windowsmedia,microsoft.public.windowsmedia.tools
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Adobe Audition 1.5 allows WMA monoaural audio at 44.1 KHz sample-rate with a bit-rate of 20 kbps
Hi:
Adobe Audition 1.5 allows WMA monaural audio at 44.1 KHz sample-rate with a bit-rate of 20 kbps. How does it do this? How can the bit-rate be less than the sample-rate? In a monaural WMA file that is 44.1 KHz sample rate, what is the minimum bit-rate that is mathematically-required? Can it be compressed to 1-bit-per-second while still retaining the 44.1 KHz sample-rate? If so, then how? If not, then why? What version of WMA does Adobe Audition 1.5 use? Also, why do WMA artifacts sound different from MP3 artifacts? What is the mechanism behind WMA compression that gives WMA its characteristic artifacts? I like WMA-specific audio artifacts. All non-WMA digital audio compressions that are below 320 kbps and/or below 44.1 KHz-sample- rate, and/or non-monaural sound like stinky human fart. Or an angry infant foaming at the mouth. The only digital audio compression I like is WMA. The sounds resulting from WMA compression sort of make me think of those RF electronic telecommunication devices used in The Bourne Identity. That movie features some really awesome devices that make those interesting sounds - for example, when the main character is getting his hand screened. I also associate these sounds with the electronic telecommunication devices used by the Soviet Union. Soviet Union has got some really psychedelic sounds in their electronics. You know, those fancy dial-up modems tones? All digital audio compression formats other than WMA, stink badly!! Here are my rules for digital audio: A. Whether compressed or not, the audio must be monaural and with a sample-rate of at least 44.1 kHz. B. The only compression allowed is WMA. No other compression format is permitted. C. In its uncompressed form, the audio must have a bit-resolution of at least 16-bit D. If compression is used, then the sample-rate of the compressed and the uncompressed version of the audio must be the same. E. If compression is used, the only thing that should be decreased is the bit-resolution. The sample-rate must remain unchanged Let's say a song that was originally recorded in stereo is given to me. The song must to be converted to mono* via the following steps: 1. Record audio from CD [or other stereo audio source] into Wavelab, Adobe Audition [or other audio software] into a file. For simplicity let's call this file "Track1.wav" 2. Make a copy of Track1.wav and save the copy as "Track1B.wav" 3. Open Track1.wav and reduce the gain of its audio by 77.5% 4. Convert Track1.wav to monaural audio 5. Save Track.1 6. Open Track1B.wav and reduce its audio gain by 50% 7. Invert the phase of the left channel of Track1B.wav 8. Convert Track1B.wav to mono 9. Save Track1B.wav 10. Create a new stereo wave file whose bit-resolution is 16-bit and sample rate is 44.1 kHz. For simplicity let's call this file "untitled.wav" 11. Copy and paste the audio of Track1.wav into the left channel of untitled.wav 12. Copy and paste the audio of Track1B.wave into the right channel of untitled.wav 13. Convert untitled.wav to mono 14. Save untitled.wav *Songs that were originally-recorded in stereo need to be converted to mono via the above 14 steps because different sounds are recorded differently in the L and R channels. The audio that is originally panned to the center is significantly louder than the audio whose phase is different in the left & right channels. This is why I reduce the loudness of non-inverted stereo audio file by 77.5% [before converting it to mono]. In the stereo file whose left channel has its phase inverted, I decrease the loudness only by 50% and then convert it to mono. Usually -- the lead vocals, bass, and percussion are recorded identically in both the left and right channels. The piano, chorus, guitar, and synth pads are usually recorded differently in the left and right channel. |
#2
Posted to rec.audio.opinion,rec.audio.tech,comp.compression,microsoft.public.windowsmedia,microsoft.public.windowsmedia.tools
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Adobe Audition 1.5 allows WMA monoaural audio at 44.1 KHz sample-rate with a bit-rate of 20 kbps
"Radium" wrote in message
ps.com Adobe Audition 1.5 allows WMA monaural audio at 44.1 KHz sample-rate with a bit-rate of 20 kbps. How does it do this? How can the bit-rate be less than the sample-rate? Because they are two different things. WMA files are often compressed using lossy compression. Lossy compression is used to vastly decrease the amount of data in the audio file. In a monaural WMA file that is 44.1 KHz sample rate, what is the minimum bit-rate that is mathematically-required? With lossy compression, there is no strict mathematical relationship. Can it be compressed to 1-bit-per-second while still retaining the 44.1 KHz sample-rate? If so, then how? If not, then why? What version of WMA does Adobe Audition 1.5 use? Why not ask Adobe. www.adobeforums.com Also, why do WMA artifacts sound different from MP3 artifacts? Because they are two different means for doing lossy compression. What is the mechanism behind WMA compression that gives WMA its characteristic artifacts? WMA is a proprietary compression technique, and not a great deal is known about its internal processing. There are people who might be able to help you at http://www.hydrogenaudio.com/ |
#3
Posted to rec.audio.opinion,rec.audio.tech,comp.compression,microsoft.public.windowsmedia,microsoft.public.windowsmedia.tools
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Adobe Audition 1.5 allows WMA monoaural audio at 44.1 KHz sample-rate with a bit-rate of 20 kbps
On Jul 17, 1:13 am, Radium wrote:
Adobe Audition 1.5 allows WMA monaural audio at 44.1 KHz sample-rate with a bit-rate of 20 kbps. How does it do this? How can the bit-rate be less than the sample-rate? Because the two are not related. The short answer is that the WMA encoder will throw away many frequencies to fit into a 20kbps target. (over 95%, I'd imagine). The output will be 44.1KHz but much of the frequency content will have been removed. In a monaural WMA file that is 44.1 KHz sample rate, what is the minimum bit-rate that is mathematically-required? Can it be compressed to 1-bit-per-second while still retaining the 44.1 KHz sample-rate? If so, then how? If not, then why? WMA encoding is a lossy process, so there is no "minimum". The "minimum" is whatever bitrate it takes to sound exactly the same (ie. "transparency") to you as the original. It is a subjective process, which is why there is much debate over "optimal" bitrates. |
#4
Posted to rec.audio.opinion,rec.audio.tech,comp.compression,microsoft.public.windowsmedia,microsoft.public.windowsmedia.tools
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Adobe Audition 1.5 allows WMA monoaural audio at 44.1 KHz sample-rate with a bit-rate of 20 kbps
Why do people continue to feed this notorious troll?
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#5
Posted to rec.audio.opinion,rec.audio.tech,comp.compression,microsoft.public.windowsmedia,microsoft.public.windowsmedia.tools
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Adobe Audition 1.5 allows WMA monoaural audio at 44.1 KHz sample-rate with a bit-rate of 20 kbps
"Richard Crowley" wrote in message
Why do people continue to feed this notorious troll? Hope springs eternal? |
#6
Posted to rec.audio.opinion,rec.audio.tech,comp.compression,microsoft.public.windowsmedia,microsoft.public.windowsmedia.tools
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Arnii Krooborg goes to town
Arnii, did you skip breakfast again? Why do people continue to feed this notorious troll? Hope springs eternal? That's not hope, Turdy. In case you forgot, the Resistance tapped into your ocular implant's feed. Here's a still shot from one of your forays into the "spring": http://shorterlink.com/?KPPI6O -- Krooscience: The antidote to education, experience, and excellence. |
#7
Posted to rec.audio.opinion,rec.audio.tech,comp.compression,microsoft.public.windowsmedia,microsoft.public.windowsmedia.tools
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Adobe Audition 1.5 allows WMA monoaural audio at 44.1 KHz sample-rate with a bit-rate of 20 kbps
On Jul 17, 5:46 am, "Arny Krueger" wrote:
WMA is a proprietary compression technique, and not a great deal is known about its internal processing. There are people who might be able to help you athttp://www.hydrogenaudio.com/ Or maybe the M$ is keeping it top secret ;-) BTW, I forget to mention that this WMA monaural audio at 44.1 KHz sample-rate with a bit-rate of 20 kbps uses a CBR bit-rate. IOW, the bit-rate of the file never changes, unlike VBR. I don't like VBR because its artifacts are not as strong as in CBR. In VBR, the artifacts seems to be on/off, sometimes more prominent, other times weaker. |
#8
Posted to rec.audio.opinion,rec.audio.tech,comp.compression,microsoft.public.windowsmedia,microsoft.public.windowsmedia.tools
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Adobe Audition 1.5 allows WMA monoaural audio at 44.1 KHz sample-rate with a bit-rate of 20 kbps
On Jul 17, 2:13 am, Radium wrote:
In a monaural WMA file that is 44.1 KHz sample rate, what is the minimum bit-rate that is mathematically-required? I can represent a 1 volt 1 kHz sine wave lasting 25 days in absolutely perfect fidelity with no distortion whatsoever in less than 800 bits total. If you please, that comes to less than 1.3 nits/sec. Also, why do WMA artifacts sound different from MP3 artifacts? What is the mechanism behind WMA compression that gives WMA its characteristic artifacts? It's broken in different ways, and people misuse and abuse it in different ways. The only digital audio compression I like is WMA. The sounds resulting from WMA compression sort of make me think of those RF electronic telecommunication devices used in The Bourne Identity. Nobody cares. I also associate these sounds with the electronic telecommunication devices used by the Soviet Union. Soviet Union has got some really psychedelic sounds in their electronics. About which we can safely bet you know absolutely nothing and have, in fact, never once heard. Here are my rules for digital audio: Really, NOBODY cares, not the least for the fact that you have not a clue what you're talking about. |
#9
Posted to rec.audio.opinion,rec.audio.tech,comp.compression,microsoft.public.windowsmedia,microsoft.public.windowsmedia.tools
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Adobe Audition 1.5 allows WMA monoaural audio at 44.1 KHz sample-rate with a bit-rate of 20 kbps
On Jul 18, 2:34 pm, wrote:
On Jul 17, 2:13 am, Radium wrote: The only digital audio compression I like is WMA. The sounds resulting from WMA compression sort of make me think of those RF electronic telecommunication devices used in The Bourne Identity. Nobody cares. Huh? Don't those sounds give you an enjoyable psychedelic feeling? |
#10
Posted to rec.audio.opinion,rec.audio.tech,comp.compression,microsoft.public.windowsmedia,microsoft.public.windowsmedia.tools
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Adobe Audition 1.5 allows WMA monoaural audio at 44.1 KHzsample-rate with a bit-rate of 20 kbps
Radium wrote: wrote: Radium wrote: The only digital audio compression I like is WMA. The sounds resulting from WMA compression sort of make me think of those RF electronic telecommunication devices used in The Bourne Identity. Nobody cares. Huh? Don't those sounds give you an enjoyable psychedelic feeling? Why don't you boil your head in a vat of acid ? Graham |
#11
Posted to rec.audio.opinion,rec.audio.tech,comp.compression,microsoft.public.windowsmedia,microsoft.public.windowsmedia.tools
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Adobe Audition 1.5 allows WMA monoaural audio at 44.1 KHz sample-rate with a bit-rate of 20 kbps
On Jul 20, 8:39 pm, Radium wrote:
On Jul 18, 2:34 pm, wrote: On Jul 17, 2:13 am, Radium wrote: The only digital audio compression I like is WMA. The sounds resulting from WMA compression sort of make me think of those RF electronic telecommunication devices used in The Bourne Identity. Nobody cares. Huh? Don't those sounds give you an enjoyable psychedelic feeling? They are annoying, boring and utterly unenjoyable, just like you are. But you bring the added dimensions of stupid and pointless to the table. |
#12
Posted to rec.audio.opinion,rec.audio.tech,comp.compression,microsoft.public.windowsmedia,microsoft.public.windowsmedia.tools
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Adobe Audition 1.5 allows WMA monoaural audio at 44.1 KHz sample-rate with a bit-rate of 20 kbps
Poopie recycles himself. Why don't you boil your head in a vat of acid ? Why don't you come up with a different retort, Poopie? You're stuck in the same groove for the past 20 years. -- Krooscience: The antidote to education, experience, and excellence. |
#13
Posted to rec.audio.opinion,rec.audio.tech,comp.compression,microsoft.public.windowsmedia,microsoft.public.windowsmedia.tools
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Adobe Audition 1.5 allows WMA monoaural audio at 44.1 KHz sample-rate with a bit-rate of 20 kbps
In rec.audio.tech Radium wrote:
On Jul 18, 2:34 pm, wrote: On Jul 17, 2:13 am, Radium wrote: The only digital audio compression I like is WMA. The sounds resulting from WMA compression sort of make me think of those RF electronic telecommunication devices used in The Bourne Identity. Nobody cares. Huh? Don't those sounds give you an enjoyable psychedelic feeling? Not as much as *plonking* your inane drivel. ___ -S "As human beings, we understand the world through simile, analogy, metaphor, narrative and, sometimes, claymation." - B. Mason |
#14
Posted to rec.audio.opinion,rec.audio.tech,comp.compression,microsoft.public.windowsmedia,microsoft.public.windowsmedia.tools
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Adobe Audition 1.5 allows WMA monoaural audio at 44.1 KHz sample-rate with a bit-rate of 20 kbps
On Jul 20, 7:39 pm, Radium wrote:
The only digital audio compression I like is WMA. The sounds resulting from WMA compression sort of make me think of those RF electronic telecommunication devices used in The Bourne Identity. Nobody cares. Huh? Don't those sounds give you an enjoyable psychedelic feeling? No, as we're not all autistic as you are. I say this not as a slam, but as someone who has an autistic family member and understands your condition. (It's also the reason I'm probably the only one responding sanely to your posts.) |
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