HP Workstation x1000 hp workstations general - audio manual - Page 22

Using Sound on Your PC Solving Problems with Sound The PC hangs while recording Uncompressed digital audio can eventually fill your hard disk. For example, one minute of stereo sound recorded at a resolution of 44 kHz will occupy about 10.5 MB. Before recording, check that there is enough free space on your hard disk. Data compression can reduce the space required. The Windows Sound System ADPCM mode reduces the space required by a factor of at least 2. More advanced algorithms reduce these requirements by a factor of up to 10. The A-law and µ-law hardware compression used by the embedded audio enables the sampling of sound at a resolution of 16-bits, but it generates the same quantity of data as an 8-bit sample. When recording sound with the Sound Recorder, for example, you can select the compression mode. MIDI files cannot be played Check the MIDI mapping: • Under Windows NT 4.0, open the Control Panel and select Multimedia. Click the MIDI tab and configure the MIDI output. To direct all output through the computer's embedded audio, click Single instrument and select ADISound FM Synthesis. • Under Windows 95, open the Control Panel and select Multimedia. Click the MIDI tab and configure the MIDI output. To direct all output through the computer's embedded audio, click Single instrument and select Analog Devices AD1816 FM Synthesis. While using a MIDI Depending on how your MIDI keyboard instrument behaves, several different instrument, there is problems can arise from your sequencer program accepting notes from your an echo, or the keyboard and feeding them straight back to the keyboard synthesizer. Your keyboard keyboard notes sound synthesizer tries to play the same note twice, with unpredictable results. There are two possible solutions: "heavy", or you can play only half the notes • Either disable the MIDI Thru capability of your sequencer program (refer to the program's documentation); • Or activate "Local Control Off" at your keyboard instrument. Refer to your keyboard's documentation on how to do this. Alternatively, simply turning on your keyboard before starting your sequencer program may correct the problem. 22 English