AudioInput Audio Wizard Transmission &Transmit When to transmit your speech This sets when speech should be transmitted. Continuous - All the time Voice Activity - When you are speaking clearly. Push To Talk - When you hold down the hotkey set under Shortcuts. DoublePush Time If you press the PTT key twice in this time it will get locked. DoublePush Time If you press the push-to-talk key twice during the configured interval of time it will be locked. Mumble will keep transmitting until you hit the key once more to unlock PTT again. Voice &Hold How long to keep transmitting after silence This selects how long after a perceived stop in speech transmission should continue. Set this higher if your voice breaks up when you speak (seen by a rapidly blinking voice icon next to your name). Silence Below Signal values below this count as silence This sets the trigger values for voice detection. Use this together with the Audio Statistics window to manually tune the trigger values for detecting speech. Input values below "Silence Below" always count as silence. Values above "Speech Above" always count as voice. Values in between will count as voice if you're already talking, but will not trigger a new detection. Speech Above Signal values above this count as voice empty Audio Processing Noise Suppression Noise suppression This sets the amount of noise suppression to apply. The higher this value, the more aggressively stationary noise will be suppressed. Amplification Maximum amplification of input sound Maximum amplification of input. Mumble normalizes the input volume before compressing, and this sets how much it's allowed to amplify. The actual level is continually updated based on your current speech pattern, but it will never go above the level specified here. If the Microphone loudness level of the audio statistics hover around 100%, you probably want to set this to 2.0 or so, but if, like most people, you are unable to reach 100%, set this to something much higher. Ideally, set it so Microphone Loudness * Amplification Factor >= 100, even when you're speaking really soft. Note that there is no harm in setting this to maximum, but Mumble will start picking up other conversations if you leave it to auto-tune to that level. Echo Cancellation Processing AudioInputConfig Continuous Voice Activity Push To Talk %1 s Off -%1 dB VOIP AudioStats Audio Statistics Input Levels Peak microphone level Peak power in last frame This shows the peak power in the last frame (20 ms), and is the same measurement as you would usually find displayed as "input power". Please disregard this and look at Microphone power instead, which is much more steady and disregards outliers. Peak speaker level This shows the peak power of the speakers in the last frame (20 ms). Unless you are using a multi-channel sampling method (such as ASIO) with speaker channels configured, this will be 0. If you have such a setup configured, and this still shows 0 while you're playing audio from other programs, your setup is not working. Peak clean level This shows the peak power in the last frame (20 ms) after all processing. Ideally, this should be -96 dB when you're not talking. In reality, a sound studio should see -60 dB, and you should hopefully see somewhere around -20 dB. When you are talking, this should rise to somewhere between -5 and -10 dB. If you are using echo cancellation, and this rises to more than -15 dB when you're not talking, your setup is not working, and you'll annoy other users with echoes. Signal Analysis Microphone power How close the current input level is to ideal This shows how close your current input volume is to the ideal. To adjust your microphone level, open whatever program you use to adjust the recording volume, and look at the value here while talking. Talk loud, as you would when you're upset over getting fragged by a noob. Adjust the volume until this value is close to 100%, but make sure it doesn't go above. If it does go above, you are likely to get clipping in parts of your speech, which will degrade sound quality. Signal-To-Noise ratio Signal-To-Noise ratio from the microphone This is the Signal-To-Noise Ratio (SNR) of the microphone in the last frame (20 ms). It shows how much clearer the voice is compared to the noise. If this value is below 1.0, there's more noise than voice in the signal, and so quality is reduced. There is no upper limit to this value, but don't expect to see much above 40-50 without a sound studio. Speech Probability Probability of speech This is the probability that the last frame (20 ms) was speech and not environment noise. Voice activity transmission depends on this being right. The trick with this is that the middle of a sentence is always detected as speech; the problem is the pauses between words and the start of speech. It's hard to distinguish a sigh from a word starting with 'h'. If this is in bold font, it means Mumble is currently transmitting (if you're connected). Configuration feedback Current audio bitrate Bitrate of last frame This is the audio bitrate of the last compressed frame (20 ms), and as such will jump up and down as the VBR adjusts the quality. The peak bitrate can be adjusted in the Settings dialog. DoublePush interval Time between last two Push-To-Talk presses Speech Detection Current speech detection chance This shows the current speech detection settings. You can change the settings from the Settings dialog or from the Audio Wizard. Signal and noise power spectrum Power spectrum of input signal and noise estimate This shows the power spectrum of the current input signal (red line) and the current noise estimate (filled blue). All amplitudes are multiplied by 30 to show the interesting parts (how much more signal than noise is present in each waveband). This is probably only of interest if you're trying to fine-tune noise conditions on your microphone. Under good conditions, there should be just a tiny flutter of blue at the bottom. If the blue is more than halfway up on the graph, you have a seriously noisy environment. Echo Analysis Weights of the echo canceller This shows the weights of the echo canceller, with time increasing downwards and frequency increasing to the right. Ideally, this should be black, indicating no echo exists at all. More commonly, you'll have one or more horizontal stripes of bluish color representing time delayed echo. You should be able to see the weights updated in real time. Please note that as long as you have nothing to echo off, you won't see much useful data here. Play some music and things should stabilize. You can choose to view the real or imaginary parts of the frequency-domain weights, or alternately the computed modulus and phase. The most useful of these will likely be modulus, which is the amplitude of the echo, and shows you how much of the outgoing signal is being removed at that time step. The other viewing modes are mostly useful to people who want to tune the echo cancellation algorithms. Please note: If the entire image fluctuates massively while in modulus mode, the echo canceller fails to find any correlation whatsoever between the two input sources (speakers and microphone). Either you have a very long delay on the echo, or one of the input sources is configured wrong. AudioWizard Audio Tuning Wizard Introduction Welcome to the RetroShare Audio Wizard This is the audio tuning wizard for RetroShare. This will help you correctly set the input levels of your sound card, and also set the correct parameters for sound processing in Retroshare. Volume tuning Tuning microphone hardware volume to optimal settings. Open your sound control panel and go to the recording settings. Make sure the microphone is selected as active input with maximum recording volume. If there's an option to enable a "Microphone boost" make sure it's checked. Speak loudly, as when you are annoyed or excited. Decrease the volume in the sound control panel until the bar below stays as high as possible in the green and orange but not the red zone while you speak. Talk normally, and adjust the slider below so that the bar moves into green when you talk, and doesn't go into the orange zone. Stop looping echo for this wizard Apply some high contrast optimizations for visually impaired users Use high contrast graphics Voice Activity Detection Letting RetroShare figure out when you're talking and when you're silent. This will help Retroshare figure out when you are talking. The first step is selecting which data value to use. Push To Talk: Voice Detection Next you need to adjust the following slider. The first few utterances you say should end up in the green area (definitive speech). While talking, you should stay inside the yellow (might be speech) and when you're not talking, everything should be in the red (definitively not speech). Continuous transmission Finished Enjoy using RetroShare Congratulations. You should now be ready to enjoy a richer sound experience with Retroshare. QObject <h3>RetroShare VOIP plugin</h3> * Contributors: Cyril Soler, Josselin Jacquard The VOIP plugin adds VOIP to the private chat window of RetroShare. to use it, proceed as follows:<UL> <li> setup microphone levels using the configuration panel</li> <li> check your microphone by looking at the VU-metters</li> <li> in the private chat, enable sound input/output by clicking on the two VOIP icons</li></ul> Your friend needs to run the plugin to talk/listen to you, or course. This is an experimental feature. Don't hesitate to send comments and suggestion to the RS dev team. RTT Statistics secs Old Now Round Trip Time: VOIP This plugin provides voice communication between friends in RetroShare. VOIPPlugin VOIP VoipStatistics VoipTest Statistics