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Hello and thank you for uos.
I want to implement two independent sine wave oscillators with uos that can output four discrete frequencies (891,920,941,977Hz) on a soundcard.
Osc.1 is linked to the right channel and Osc.2 to the left channel of a sound device. Both oscillators must be swichted on and off independently with one of the above frequencies.
I was running some tests with a modified consolesynth demo which are very promising.
Nonetheless I want to ask whether my approach is the best practice.
Here is the code:
uos_CreatePlayer(PlayerIndex1);
inindex1 := uos_AddFromSynth(PlayerIndex1,400, 0 {vol L},0.1 {vol R}, 0 {dur}, -1, -1, -1, -1 ); //init synth R
inindex2 := uos_AddFromSynth(PlayerIndex1,200, 0.1 {vol L},0 {vol R}, 0 {dur}, -1, -1, -1, -1 ); //init synth L
uos_AddIntoDevOut(PlayerIndex1,-1,-1,-1,-1,0,-1);
uos_Play(PlayerIndex1); //start player
sleep(1);
uos_InputSetSynth(PlayerIndex1,inindex1, 400, -1,-1, -1,false); //mute synth R
uos_InputSetSynth(PlayerIndex2,inindex2, 200, -1,-1, -1,false); //mute synth L
sleep(5000); // 5sec silence
uos_InputSetSynth(PlayerIndex1,inindex1, 400, -1,-1, -1,true); //unmute synth R
sleep(5000); // 5sec R(400) only
uos_InputSetSynth(PlayerIndex1,inindex1, 400, -1,-1, -1,false); //mute synth R
uos_InputSetSynth(PlayerIndex2,inindex2, 200, -1,-1, -1,true); //unmute synth L
sleep(5000); // 5sec L(200) only
uos_InputSetSynth(PlayerIndex1,inindex1, 600, -1,-1, -1,true); //unmute synth R + change freq
sleep(5000); // 5sec R(500)+L(200)
uos_InputSetSynth(PlayerIndex1,inindex1, 400, -1,-1, -1,false); //mute synth R
uos_InputSetSynth(PlayerIndex2,inindex2, 200, -1,-1, -1,false); //mute synth L
sleep(5000); // 5sec silence
uos_InputSetSynth(PlayerIndex2,inindex2, 300, -1,-1, -1,true); //unmute synth L + change freq
sleep(5000); // 5sec L(300) only
It works fine but I have two questions:
- is it the best way to do it?
- why do I need the sleep(1) code line after initialization of the synthesizers? If I omit sleep(1) the first tone (5sec R(400) only) remains silent. I think that the short beep (sleep(1)) after init is not causing any confusion to the tone detectors connected to the outputs of the sound card, but one can never know. Ideally the synthesizers would be initialized silently with any frequency and then triggered on demand with any of the four mentioned frequencies that is needed through uos_InputSetSynth.
To give you a rough idea of the usage of the system:
The RX side of the system has four HW tone detectors (891,920,941,977Hz) on it's input which trigger an UDP datagram to the opposite equipment. The uos has to reproduce the detected frequency according to the content of the received datagram towards the output on the RX side where external frequency detectors take over to trigger the appropriate actions.
Thank you in advance for your help.
Kindly Chris
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