[music-dsp] low input latency - DirectSound

[Jon Watte]

Just like each vendor ships a WAV and/or a WDM/DirectSound 
driver with each sound card, for use by the Win32 API (wavOutOpen 
or IDirectSound), a vendor can ship an ASIO driver which works 
with the ASIO API.

Typically, ASIO drivers for a card will also support WAV and/or 
WDM for use as a regular sound card under Windows, although you 
often can't do both at the same time. The latest Echo drivers are 
nice in that you can set aside some channels for Win32 and some 
for ASIO if you want. Myself, I put a SoundBlaster Live! in for 
games, and use the Layla for music, and tell Win32 to never use 
the Layla and ASIO to never use the SBL!.

Cheers,

				/ h+


> -----Original Message-----
> From: owner-music-dsp at shoko.calarts.edu
> [mailto:owner-music-dsp at shoko.calarts.edu]On Behalf Of Pavel Savygin
> Sent: Wednesday, March 21, 2001 3:52 AM
> To: Jon Watte
> Subject: Re[4]: [music-dsp] low input latency - DirectSound
> 
> 
> Hello Jon,
> Friday, March 16, 2001, 11:19:38 PM, you wrote:
> 
> JW> ASIO is a different driver API. Many professional sound 
> JW> device makers ship their devices with ASIO drivers in 
> JW> addition to MME (WAVE) and WDM (DirectSound) drivers. 
> JW> ASIO is better than WAVE or DirectSound because it uses 
> JW> a more synchronous model which allows for smaller buffer 
> JW> sizes.
> 
> Ok.
> So, as I understood ASIO driver must be specific for every soundcard
> or it works thru drivers from producer of soundcards by using win api
> and not directly with soundcard?
> 
> -- 
> Best regards,
>  Pavel                            mailto:p.savygin at virtualphotonics.com
> 
> 
> 
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