Adobe 65009626 User Guide - Page 23

USING SOUNDBOOTH CS4 19 Importing, recording, and playing audio 6 If you want Soundbooth to continue playing audio when you switch to other applications, select Continue Audio Playback In Background. Note: If multiple Windows applications use the same ASIO device, only one application can output audio at a time. Set properties for standard Windows sound cards In Windows, professional ASIO sound cards provide the best audio performance. If you're using a standard WDM or DirectSound card, however, you can improve performance by optimizing driver properties. Note: The default driver properties work well for most systems. If you're experiencing slow response or audio dropouts, however, complete the appropriate procedure below. Set properties for a WDM card If you have a newer sound card that supports WDM, select this driver option. (WDM provides better performance than DirectSound.) 1 Choose Edit > Preferences > Audio Hardware. 2 From the Default Device menu, select Soundbooth 2.0 WDM Sound. 3 Click Settings. 4 On the Input and Output tabs, set the following options: Enable Devices Determines which input and output ports are available in the Audio Hardware preferences. Device 32-bit Recording and Playback Enables 32-bit inputs and outputs. To confirm whether a sound card supports this bit depth, see the documentation for the card. Buffer Size Specifies the number of audio samples buffered during recording and playback. If you hear skips or dropouts, increase the buffer size; if playback and recording start slowly, decrease the size. Set properties for a DirectSound card If you have an older card that requires DirectSound, select this driver option. 1 Choose Edit > Preferences > Audio Hardware. 2 From the Default Device menu, select Soundbooth 2.0 DirectSound. 3 Click Settings. 4 In the DirectSound Full Duplex Setup control panel, set the following options, and then click OK. Device check boxes Determine which ports are available in the Audio Hardware preferences. Buffer Size (Samples) If you hear skips or dropouts, double-click the Buffer Size value for an input or output device, and type a higher value. If playback and recording start slowly, type a lower value. Offset (Samples) Determines the audio latency (delay) between multiple sound cards. To enter a new value, double-click the current one. Port Order If the selected device includes more than one port, click the Move Up or Move Down button to change the order of the ports. Sync Reference In systems with multiple sound cards, specifies which card sets the master clock. (The master clock synchronizes digital audio devices.) Full Duplex Enables Soundbooth to simultaneously record and monitor audio. Leave this selected unless you have a very old sound card that doesn't support full-duplex operation. Updated 15 July 2009