Re: 96kHz 24bit WAV playback

Any chance we could get a comment from one of your experts on .wav 
playback (Jon/Ken I presume) before we start digging into this any more ?


Eric Hyche wrote:
> Hard to tell when using PC RealPlayer as comparison. It
> uses DirectX to play back .wav files, and not Helix,
> the Windows RealPlayer might be able to play it back
> but Helix still might not.
>
> If the changes suggested below by Greg didn't work,
> then further investigation is needed to find out
> why.
>
> Eric
>
> =======================================
> Eric Hyche ([email protected])
> Principal Engineer
> RealNetworks, Inc.
>
>
>   
>> -----Original Message-----
>> From: [email protected] [mailto:[email protected]]
>> On Behalf Of John Stirling
>> Sent: Tuesday, December 23, 2008 4:14 AM
>> To: [email protected]
>> Subject: Re: [Helix-client-dev] 96kHz 24bit WAV playback
>>
>> I heard a rumour that the PC real player now supports 24/96 playback ?
>>
>> If so, is it possible to port those changes to cayenne ?
>>
>> John
>>
>>
>> John Stirling wrote:
>>     
>>> I added 96000 into that list but still can't play the file.
>>>
>>> Is there anything else easy to try ?
>>>
>>> John
>>>
>>>
>>> John Stirling wrote:
>>>       
>>>> Thanks (I remember that list)
>>>>
>>>> re 24 bit -
>>>>
>>>> . if the audio device only supports 16 bit would you expect the
>>>> core/resampler to handle that ?
>>>> . if the audio device supports 24 bit would the core be able to
>>>> output in 24 bit ?
>>>>
>>>> John
>>>>
>>>>
>>>> Greg Wright wrote:
>>>>         
>>>>> From hxaudses.cpp:
>>>>>
>>>>> const unsigned short z_anValidSampleRates[] = { 8000,
>>>>>                                                 11025,
>>>>>                                                 16000,
>>>>>                                                 22050,
>>>>>                                                 32000,
>>>>>                                                 44100,
>>>>>                                                 48000,
>>>>>                                                 49512
>>>>>                                               };
>>>>>
>>>>> You might need to expand that list at least.
>>>>>
>>>>>
>>>>> --greg.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> John Stirling wrote:
>>>>>           
>>>>>> I tried a sample track on RealPlayer10 on windows and it didn't work.
>>>>>>
>>>>>> The same track could play ok via itunes, but not via WMP10.
>>>>>>
>>>>>> See:
>>>>>> http://www.itrax.com/Pages/HelpFAQs.php#1
>>>>>> for track we're trying to play
>>>>>>
>>>>>> John
>>>>>>
>>>>>>
>>>>>> Eric Hyche wrote:
>>>>>>             
>>>>>>> I was hoping someone else would answer, since
>>>>>>> I'm not 100% certain of my answer... :-)
>>>>>>>
>>>>>>> If you are talking about playing back a raw
>>>>>>> 96kHz 24-bit-per-sample .wav file, then I can't
>>>>>>> think of a reason that *wouldn't* work, assuming
>>>>>>> the audio device could be opened at 96kHz
>>>>>>> and 24bits. If it couldn't be, then it would
>>>>>>> have to go through a few other layers of the
>>>>>>> system (resampler, etc.) which I *believe* suport
>>>>>>> this format, but I'm not sure.
>>>>>>>
>>>>>>> Jon/Ken: do you know if this would work, or
>>>>>>> have you ever tried 96kHz/24-bit playback?
>>>>>>>
>>>>>>> Eric
>>>>>>>
>>>>>>> =============================================
>>>>>>> Eric Hyche ([email protected])
>>>>>>> Technical Lead
>>>>>>> RealNetworks, Inc.
>>>>>>>               
>>>>>>>> -----Original Message-----
>>>>>>>> From: [email protected]
>>>>>>>> [mailto:[email protected]] On Behalf Of
>>>>>>>> John Stirling
>>>>>>>> Sent: Friday, January 18, 2008 5:04 AM
>>>>>>>> To: [email protected]
>>>>>>>> Subject: Re: [Helix-client-dev] 96kHz 24bit WAV playback
>>>>>>>>
>>>>>>>> Any response on this ?
>>>>>>>>
>>>>>>>>
>>>>>>>> John Stirling wrote:
>>>>>>>>
>>>>>>>>                 
>>>>>>>>> Is 96khz, 24bit WAV supported on cayenne1_5_0 ?
>>>>>>>>>
>>>>>>>>> Seems a bit excessive, but someone is asking..
>>>>>>>>>
>>>>>>>>> John
>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> Helix-client-dev mailing list
>>>>>>>>> [email protected]
>>>>>>>>> http://lists.helixcommunity.org/mailman/listinfo/helix-client-dev
>>>>>>>>>
>>>>>>>>>                   
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>>>>>>>>
>>>>>>>>                 
>>>>>>>               
>>>>>> ------------------------------------------------------------------------
>>>>>>
>>>>>>
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