"Leonid Makarovsky" skrev i en meddelelse
...
I have a 2 hour WAV file that I need to make 1 second longer. I was doing
the video capture and audio was ahead of video by 1 second factor.

So I need to stretch it without losing quality. The effect should be the
same as if I played an analog cassette tape a bit slower. The reason I'm
asking
is that I had never had problems with squeezing WAV file (i.e. making them
shorter). But I once tried to stretch the WAV file in GoldWave sound
editor
and artifacts such as clicks and distortion were introduced in sound. Any
way
to do it without artifacts? Thanks.

--Leonid

PS. The WAV file is 16 bit 48kHz.

Just duplicate every 7200th sample.