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===Solving Audio-Problems=== | ===Solving Audio-Problems=== | ||
The following assumes that you have problems even after you did set up your system as described in [[Verifying your Audio-System]].<br><br> | |||
'''Poor Audio Quality''' | |||
*Check especially your microphone-cables for a good quality shielding and root them as far away as possible from electromagnetic noise emitters (motors, blowers, AC-cabling, lamps, etc.). | |||
*It even may help to place your sound-card into a different slot | |||
*A (digital) USB-headset helps in avoiding noise and feedback problems | |||
'''Background noise raising with time'''<br> | |||
This is typical for an active automatic “Boost”, “Gain”, or “Amplifier” device, or a microphone set too sensible. i.e. while there is no “real sound” the devices will try to “boost” the “background noise” to a real sound level – and that may hurt your ears. | |||
*'''Basically:''' Do not keep the PTT pushed longer than absolutely necessary, before and after speaking!<br> | |||
*Try to say something and the sound-system should adjust to that – but the problem will reappear after a short while. '''You should always switch off your microphone if you are not really talking – and keep the microphone level as low as possible!''' | |||
*If anyhow possible, do not use automatic boosters. If your microphone does need such a support, keep it to a minimum. Especially in the FGCom application the microphone output needs less power because the central server does equalize the loudness of all users. | |||
'''Unexpected behavior'''<br> | |||
Especially “high quality” sound-cards may get you into trouble, because e.g.: | |||
*they may monitor how long the microphone was not used and switch it off after some timespan (without you noticing it) | |||
*during reboot or restart they may initiate with values out of a special profile instead of reusing the “last used” values | |||
*or they may set some slide controls to “0” (especially microphone sliders) | |||
*some do switch the microphone only after pushing '''and''' releasing the space-bar – while we want to change the microphone-status only while the space-bar is pushed down! (This may not affect a PTT asigned to a joystick)<br> | |||
So know your standard settings and check if they have changed (without your written permission!)<br><br> | |||
'''Special for Linux''' | |||
(ref [[Linux software audio mixing with FlightGear]]) <br> | |||
check your Home-directory (“~/”) for a file "'''.alsoftrc'''" | |||
(remember that the “show hidden files” must be enabled!) | |||
*if ".alsoftrc" does not exist | |||
**Check if there is a (old version) ".openalrc" | |||
***if yes: rename that to ".alsoftrc" | |||
***if not crate a new ".alsoftrc" | |||
*If not already done so insert into the file “.alsoftrc” the following : | |||
(define devices '(alsa)) | |||
(define alsa-out-device "plug:dmix") | |||
===Using FGCom=== | ===Using FGCom=== | ||