sample rates in audio

Stephen Barncard stephenREVOLUTION at barncard.com
Wed May 17 18:41:15 EDT 2006


Hey if 2.5 is ok for your high freq response - fine for speech and some sounds.
Music?  hmmmmm...

sqb

>Oh my... now wonder it is so confusing... "recordSampleSize" is NOT 
>the sample rate...
>
>
>On May 16, 2006, at 3:15 PM, Stephen Barncard wrote:
>
>>I don't know how rev would store an 11 bit wide word without waste. 
>>Computers store info in their nice 8-wide world. It comes down to 
>>parts and sanity. There are packing methods to do this - is that's 
>>what's happening here?
>>
>>Try a test. See if there is no difference in file size between 
>>using 11 bit and 16 bit wide for  RecordSampleSize
>
>
>Confirmed, you are so right...
>
>on recordSound
>   set the recordsamplesize to 11
>   set the recordrate  to 5
>   set the recordformat to "wave"
>   record sound file gAudioTestPath
>end recordSound
>
>12 secs --> 184K
>
>open in QT Pro, get movie props... it shows 16 bit, 8 khz
>
>on recordSound
>   set the recordsamplesize to 16
>   set the recordrate  to 8
>   set the recordformat to "wave"
>   record sound file gAudioTestPath
>end recordSound
>
>12 secs --> 184K
>
>Same size, same quality...
>
>Sivakatirswami

-- 
stephen barncard
s a n  f r a n c i s c o
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