C.1 Platform dependencies

• Mac OS X: Audio Interface CoreAudio only supports sample rates supported directly by the hardware. Use ’JavaSound’ interface for other sample rates on Mac OS X later than 10.7.
• Windows XP: If the built-in USB audio driver is used, the sample rate will be set to 22.05 kHz when a Windows system beep is output via an M-Audio mobile pre USB device. SpeechRecorder does not detect this change of sample rate. All subsequent recordings will be made using the new sample rate. Solution: make sure to install and select the most recent M-Audio device driver from http://de.m-audio.com/.
• Windows 7,8,10: The operating system distinguishes audio devices of the same model by inserting a counter number in the device name. This only happens if you connect the same device to different (USB) ports. It is recommended to always connect to the same USB port. Another workaround is to use a regular expression for the audio device name which matches the numbered audo devices.