sound – no audio input from internal microphone in web browser

internal microphone of my laptop does not work correctly in web browsers, skype and some other apps. but it works well in other apps like audacity.
by “not working correctly” I mean there is sound but it is too quiet and very low quality.

however, when plugging in a headphone from audio jack, it works properly.

what is the difference between audio input of web browsers and audacity? do they use different libs? and can I fix it?

20.04 – When I unplug headphones, audio switches to HDMI out instead of laptop speakers

My HDMI port is connected to a VGA adaptor, so to get audio I have to manually switch the audio output to the speakers whenever I unplug my headphones. I’ve tested this with a mic’d headset and normal headphones and it happens with both. I’ve seen an answer to a similar question which suggests disabling the HDMI output in pavucontrol, but there’s no option to do this.

applications – How to play CACHE Audio files ? How do I convert them to mp3 files?

I have a music streaming app that can download music. I checked the directory of the app in Internal Storage. It has got audio files for the songs I had downloaded but in CACHE format.
I would like to know how can I play those CACHE files on a different device say my PC? How can I convert CACHE audio to mp3 ?

I have tried changing the extension to mp3 (This method presently works with .xoht files of music) but here it make the audio corrupted.

I searched the net for conversion of CACHE to mp3 but have got a result on a site that converting CACHE files is not possible. SRC:

18.04 – Audio with RockPi 4

I have a RockPi 4 B.

I followed the steps for setting up Ubuntu.

For BLE I executed all the commands mentioned in the Bluetooth section.

Hardware is connected with the mobile phone but there is no sound in hands-free connected with hardware’s audio jack.

This is my first experience with RockPi and Audio operations. I am trying to:

  1. Listen to songs
  2. Talk to a person over a voice call

Based on the exploration Pulseaudio, A2DP and HSP (Hands Free Profile) can help me to achieve the above two targets.

Hands-Free Profile (HFP) and Headset Profile (HSP) Those Bluetooth

earpieces that makes important business guys look like self-conversing
wackos? Those usually use headset profile (HSP) or hands-free profile

HFP is used in the hands-free audio systems built into cars. It
implements a few features on top of those in HSP to allow for common
phone interactions (accepting/rejecting calls, hanging up, etc.) to
occur while the phone remains in your pocket.

ios – The duration of audio from list of audio urls is not properly loading in table view

if let url = URL(string: url) {
                    let item = AVPlayerItem(url: url)
                        let duration = Double(item.asset.duration.value) / Double(item.asset.duration.timescale)
                        DispatchQueue.main.async {
                            cell.label.text = "(duration)"

I am listing a list of audios . I have to calculate the duration of each audio and show as well.Above is the code which i have used . The durations are not properly showing when the table view is scrolled .

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Fixed price: 15 $ USD.

Audio/Video length: less than 10 minutes.

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macos – EvoCam (video camera software) did not capture audio for 2 weeks on Mac running Mavericks—way to find it?

I know it’s a longshot.

I have an old Mac Mini running Mavericks running EvoCam 4.2.6 (old software no longer available).

The Mac Mini is connected via WiFi to an Amcrest camera. The Mac Mini is not compatible with the built in mic on the Amcrest, so I have a USB microphone running from the Mac Mini. Video comes from the Amcrest and audio from the USB mic. It usually works fine.

It records in hour long increments and outputs to .mov files.

For some reason starting two weeks ago, the audio didn’t record even though I could see the system sound setting could detect audio from the microphone. Something on the software side messed up.
The videos are there but with no audio. It took a restart to get it to record audio to the files again from the EvoCam app.

The audio is important.

I’m wondering if there are any ideas as to where the audio might have gone–again I know longshot. It records to an external drive connected to the computer. I tried looking at hidden files and I can see a .Trashes folder, but it says I don’t have permission to open it.

Are there any other places scuttled audio could have gone?

sound – Why does unplugging an USB audio card remap my keyboard?

This is puzzling. Every time I unplug my audio card, my .Xmodmap-based keymapping goes away.

I restore it with

xmodmap ~/.Xmodmap

and I am back to normal – but it’s annoying. Any idea as to why is that?

Card (lusb):

GYROCOM C&C Co., LTD DigiHug USB Audio

Linux version (uname -r):



Ubuntu 20.04.2 LTS

network – Facetime audio calls not working using iPhone

I have a Netgear Nighthawk MR60 mesh system with a WiFi router and one satellite. Since I installed it, I cannot make calls using my iPhone xs with either of my Mac computers. The window comes up telling me I’m using Facetime audio with my iPhone, but I immediately get a message in the window saying that the phone and the computer must be connected to the same WiFi network in order to complete the call. Repeated attempts at this have failed.

It looks like everything is set up on all Apple devices for this to work.

On my Nighthawk app, all 3 devices show up on my 5 GHz network.

This worked with the former WiFi router I had and replaced. It was not a mesh system. That router had the ability to connect to either the 2.5 GHz or the 5 GHz network manually. Apparently, the Nighthawk does not have the manual connection option.

I’ve tried logging out of and back into Facetime to no avail.

MacBook Pro (Retina, 13-inch, Early 2015) running macOS Catalina 10.15.7;
iMac (Retina 4K, 21.5 inch, Late 2015) running macOS Cataline 10.15.7;
iPhone XS Max IOS 14.4.2

On the Apple sight I can only find older similar questions – nothing recent except what I posted there.

Any help is welcome and appreciated.

macbook pro – How do I troubleshoot screen capture utilities only capturing one side of audio?

I use screen capture utilities like Movavi and Snagit on my MacBook Pro 2019 (Big Sur) to record software demos. When using a headset or any other microphone connected to a USB port, the recorded audio is in stereo.

When I use any external audio interface (PreSonus Studio 24C or Behringer U-Phoria UM2) as the captured audio source, I only get one side (the left side) of the audio. Using either interface with an application that doesn’t capture the screen in any way works perfectly, clear audio from both sides.

I’m certain that the audio interfaces are working properly. For instance, I can record my voice just fine using Vector 3 (or any other audio recorder) and the audio interface, and it’s clear stereo.

I need to use an audio interface because the mic I need to make a good recording needs an interface in order to work with my MacBook Pro. I haven’t had a lot of luck troubleshooting this, even through contacting support from Movavi and Snagit. I’m trying my best to go through all possible system settings and configuration tweaks that I can – is this a common problem with screen capture scenarios? I was about to chalk it up to a third-party bug, but this seems to persist no matter what utility I use, yet the audio interfaces work perfectly fine with any other software that isn’t doing a screen recording and I’m a little baffled as to why.