13-13
Audio Performance
¥ Check your DMA buffer sizes when operating at 24 bits.
¥ Read the Soundcards.pdf document located in the
OnLineDoc folder of your product CD
¥ Keep in mind that using 24-bit depth and/or a high sampling
rate needs a lot of disk space and a fast CPU.
For more information about working at 24-bit depth, see the
24BitTips.pdf document located in the OnlineDoc folder of your product
CD. For the latest information, visit the Cakewalk Website at http://
www.cakewalk.com/Support/Docs/24BitTips.html
Digital Audio Data Management
Digital audio requires a large amount of disk storage. The tables below
show the disk space requirement in megabytes for a single minute of
digital audio at various sampling rates:
Use the Wave Device ProÞler on your sound card. Once your sound card
is proÞled, check the buffer size settings in the Device ProÞles tab of the
DirectShow Audio dialog box to conÞrm that they are exact multiples of
3. If they are not, you may experience glitches, stutters or dropouts. If
this is the case, multiply each of the DMA buffer size values by 3 and
reenter the new, larger values into the Þelds on the Device ProÞles tab.
If the problem persists, see Dropouts and Other Audio Problems in the
online help.
The soundcards.pdf document gives information for some of the most
popular sound cards on the market. For the latest information, visit the
Cakewalk Website at http://www.cakewalk.com/Support/Docs/
SoundcardTips.html
24-bit projects use 50% more disk space than 16-bit projects. If you have
a large number of audio tracks, the amount of disk space needed for
your project could become quite large. Also, a powerful CPU may be
required to play back the large 24-bit tracks, particularly if you use
real-time effects.
Mono
Rate... 16 bit 24 bit
11 kHZ 1.3 1.9
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