This would do the trick:






instr 1

a1  diskin2  "test.wav", 1

      out a1
endin



i1 0 2
e



----- Original Message ----- 
From: "mark jamerson" 
To: 
Sent: Wednesday, December 10, 2008 6:09 PM
Subject: [Csnd] Re: Re: 24bit->16bit conversion in Csound


>
>   Maybe I am doing something wrong.  I will try a few things and see what 
> happens, and if that doesn't work, I will post CSD's and such.
>
>
>                Mark
>
>
>
> ----- Original Message ----
> From: victor 
> To: csound@lists.bath.ac.uk
> Sent: Wednesday, December 10, 2008 11:31:37 AM
> Subject: [Csnd] Re: 24bit->16bit conversion in Csound
>
> I don't follow you. If you open a soundfile with diskin or diskin2, 
> whatever
> encoding it is, and then run csound as normal, you will get a perfect
> 16bit file
>
> Victor
>
> ----- Original Message ----- From: "mark jamerson" 
> To: "Csound" 
> Sent: Wednesday, December 10, 2008 4:56 PM
> Subject: [Csnd] 24bit->16bit conversion in Csound
>
>
>>
>> Hello,
>>
>>     During an effort to look into the effects of dither, I was trying to 
>> convert 24bit files into 16bit files.  The file used was a mono 1k sine 
>> tone generated in Csound, using GEN10, with table size 65536, and an 
>> oscil amplitude of 10000.  This file sounded and looked perfect.  Then I 
>> tried converting the file to a 16bit file in Csound.  I tried loscil and 
>> fout to write a 16bit file.  The result was unacceptable, with what 
>> sounded like FM sideband modulation. The spectrum analysis also looked 
>> extremely messy, with a bunch of extra noise all over the place.  Next I 
>> tried using diskin followed by soundin, figuring it might be a problem 
>> with my loscil setup. The same results, exactly.  I know that converting 
>> a 24bit file to a 16bit file without using dither will lead to a 
>> degradation in sound quality, but this seemed excessive.  In an attempt 
>> to verify my concerns, I tried the same sort of experiment in a consumer 
>> DAW software, by rendering the same 24bit
>> file as a 16bit file, with no dither, and got a much cleaner result.  The 
>> new file sounded indiscernable form the 24bit source, but the spectrum 
>> analysis confirmed a difference, with extra noise across the spectrum, 
>> but not anywhere near the levels of the Csound version.
>>    So here's my question:  Does anyone do this sort of conversion in 
>> Csound, and get acceptable results, if so what methods do you use?  Also, 
>> something I just thought of is that I am using the Float version of 
>> Csound, is this possibly the cause of these results (would the double 
>> version eliminate this sort of thing)?
>>
>>
>> Mark
>>
>>
>>
>>
>>
>>
>> Send bugs reports to this list.
>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe 
>> csound"
>
>
>
> Send bugs reports to this list.
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe 
> csound"
>
>
>
>
>
>
> Send bugs reports to this list.
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe 
> csound"