The volume at which audio is sent to the mic/audio input. Audio Outputĭefault Jitter Buffer: If your mic audio is distorted, metallic, or sounds like a robot, try increasing this setting a notch or two. Amplification: This setting controls how loud the receive audio is. I recommend setting Noise Suppression Disabled to remove all noise suppression. If filtering is too aggressive, then your voice may become distorted. When set to Speex, RNNoise or Both, a slider will adjust how aggressively noise is filtered. Noise Suppression: Mumble can automatically filter out static background noise. I recommend that you leave this at 20 ms. A lower value means less latency, but might potentially introduce quality loss, if too low. However, if the audio sounds distorted, you can try raising or lowering this value.Īudio per packet: This is the amount of audio that Mumble sends at a time. I recommend that you leave this at 40.0 KB/s. Quality: This is the quality at which Mumble will encode audio from your radio. Dragging this slider all the way to the left will disable this feature. Idle action: This will cause Mumble to automatically mute the receive audio if there is no radio audio for a certain amount of time. Not active when Continuous Transmission is selected. I recommend "Continuous", but you can also have Mumble attempt to transmit only when there is active audio from your remote device.Īudio Cue: This causes a sound to play whenever you press or release the Push-To-Talk key. Transmit: This lets you change what causes audio from your radio to be sent. In Mumble Configure>Settings>Network enable the 'Reconnect automatically' and 'Reconnect to last server on startup' options. You will have to adjust them to maximize audio quality with your RigPi. The screen shots below are shown below to include all audio in and audio out settings. Mumble can send audio continuously, by use of a PTT key, or by detecting the presence of audio. If Noise Suppression is enabled the normal background noise on HF can cause distortion and clicking in the audio output. One setting that applies to Mumble in RSS is found in the Audio Processing group of Mumble Configure>Settings>Audio Input. Refer to Mumble Help for setting up Mumble. Set Device to Default Input in Audio Input and Default Output Audio Output. Mumble uses RigPi Audio for input and output audio, audio USB dongles, or CODEC's from your radio. Restart Mumble to have the settings stick. If you make any changes to Mumble settings, click Apply at the bottom of the settings window to test. When you start Mumble the Mumble window opens on RSS: Run Mumble Autostart to have Mumble start automatically when RSS is rebooted. A utility named Mumble Autostart is in the Internet menu as well as on the RSS Desktop. Mumble can be started manually from the RSS Desktop Menu by selecting Internet>Mumble. The Murmur Server is named RigPi VoIP Server and the configured Mumble Client is named pi. Mumble clients are available for all popular operating systems. Remote Mumble clients can also connect to the server and receive and send audio. One radio can be connected to the Mumble client. The RigPi Audio board normally provides an input and output path for Mumble client, although USB audio sound devices or radio CODECs can also be used. A VoIP server called Murmur is installed on RSS along with the Mumble client.
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