Fireproof Sound Deadening Material Foshan Soundproof Materi

3mm Thick Acoustic MLV Barriers Type Mass Loaded Vinyl Barrier

MLVinsulation is a professional manufacturer of mass loaded vinyl roll and sound insulation products in China. Specializes in research, developing, manufacturing, sales and technical services, with excellent quality, advanced technology, and Sincerely service to all the customers.

2mm Thick Acoustical MLV Barrier Type Mass Load Vinyl Barriers
1.Very easy to install
2.Size: 1000×10000, 1000x5000mm
3.Ideal to use in noisy places
4.Block unnecessary noise

Our Products

Fireproof Sound Deadening Material Foshan Soundproof Material
Hotel Sound Absorbing Insulation for Decoration Sound Absorbing Wall
Noise Insulation Deadening Felt Sound Dampening Material Panels
Soundproof and Fireproof Material Acoustic Insulation Board

Success servicing in acoustic industry of China, and soundproof matting is exported to Santos Brazil, Charlotte United States, Toulouse France, Indore India, Ankara Turkey, Rome Italy, Belfast United Kingdom, Toronto Canada, Arnhem-Nijmegen Netherlands, Belgrade Serbia, East Rand South Africa, New Orleans United States, etc.

Our 3mm Thick Acoustic MLV Barriers Type Mass Loaded Vinyl Barrier are installed in Shenzhen Futian District Stock Exchange, Guangxi Wuzhou Cangwu County People’s Government Office, Gansu Province China Oil Northwest Company, Chongqing Banan District Finance Bureau, Kunming University City Sports Center, Haikou City Government Office Conference Center, etc.

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Is there any way to unmute Telegram profile video sound?

I’ve searched a lot in YouTube, Quora,… but find nothing.

I believe that’s possible , although I have no great ideas .

I think using strange video formats can be helpful but not sure about that.

If you have same question please vote this up to reach more people and to find better answers.

audio – How to tell if a laptop has integrated headphone jack with both mic input and sound output?

I have an Acer Aspire 5 laptop. On the side of the laptop, there is a 3.5mm jack. The icon next to the jack prints a headphone with a mic.

I tried plugging in an earpiece (with a TRRS plug) and I can hear stereo. But I don’t see how I can use its mic.

I opened Sound Settings and under Choose your input device, there is only 1 option of Microphone Array (Realtek(R) Audio). If this laptop has an integrated audio jack, should I be seeing an additional input device? Or does the laptop not detecting a mic?

audio recording – Multichannel USB sound card

Before purchasing a 4-channel USB sound card, e.g. the Behringer UMC404HD, I wish to know if with that card, connected to my Samsung S9, it’s possible to have simultaneous 4-channel records, e.g. record a live string quartet. Thanks for any help.


audio – How do I completely mute the sound in phonecalls?

I don’t mean I want to mute the ringtone, and I don’t mean I want to mute my own microphone. I want to mute the sound of the other person on the call.

When I use the volume control during a call, I can put the slider all the way down to zero but the call is still audible – either the slider only acts on the ringtone, or the slider is capped at a minimum (non-zero) volume level. How do I make the call completely silent?

(For context: I make calls using a relay service, where I type, and a remote assistant speaks and types the response back to me. This service involves making the call on my phone, so I still get the sound of the people talking – I want to silence this.)

audio – Record and play sound from Android to a computer – Jack disconnects periodically / Jack undetected – Depending on Android version

I would like to control audio IO of my android phone with a computer. I’m currently using a usb audio sound card with a input mic and line output ports connected to my computer. A phone is connected to an adapter jack 4 pins to 2 jack 3 pins (reference). The adapters mic input is connected to the sound card line output and the adapters line output is connected to the sound card mic input. Like this, I can theoretically record phones output with the computer and play a sound on phones input from the computer.

I have with me 3 phones devices, one android 10 (Redmi Note Pro 8) an other one is a android 9 (Samsung Galaxy A40), the last one is an android 4.0.3 (LG p700)

Everything works fine on the 4.0.3. The phone can detect the cable and I can record the phone output and play on the phone input.

But on the two others devices, it’s not working.

On Android 9 : the phone can’t detect the jack cable of the adapter, but when I plug earphones with mic (jack 4 pins), it’s working. I think that isn’t an hardware issue.

On Android 10 : the phone can detect the cable but changes state every seconds (detected/undetected). That means it is switching between earphone output and speaker output which is impossible to record or play. Like android 9, i can plug earphones, and it’s working.

I personally think this may be related to phone impedance that is checked by recent version of Android.

What should I do to record and play on audio IO of a phone from a computer?

It’s possible to me to develop an app on android and create a program on the computer to initialize the connection. Stereo recording isn’t the objective here, mono will be enough.

(I cannot use in my case other protocol like USB or Bluetooth to record and play on phones)

EDIT 1 : Concerning OMTP/CTIA standards

To know the standard used by each device, I did this experimentation. On my previous setup, I’m able to find that it is a CTIA standard (found with an ohm-meter, mic and output line are separated). I know then my Android 4.0.3 is working with a CTIA standard.

I have with me wires, a sound card (reference), and jack 4 pin to wires adapters (reference) (the adapters are respecting OMTP standard but we don’t care because we are using 2 of them)

Firstly, I created a normal DIY setup Normal DIY setup

This setup works fine for the Android 4.0.3. Then i guess my sound card is a CTIA standard. But unbelievably, it works fine with Android 9, and don’t work with Android 10.

Now, I know that my sound card, Android 4 and Android 9 are all CTIA standard

Secondly, I decided to create a crossover cable setup. Like this, I will force an OMTP standard with a CTIA sound card.

Cross-over setup schema

As expected, this setup do not work on Android 4 and Android 9. But on Android 10, an headset without mic is detected. But I’m unable to listen/play a sound on the device. When I’m switching cable side on Android 10, the headset is periodically connecting/disconnecting like with the first setup (before edit).

To conclude, I guess that my issue isn’t related to OMTP/CTIA but to the protocol used by devices to find plugged headset. With the Android 4, the jack port contains a little switch to know when a cable is plugged. On the others devices, this switch is present but do not have a direct impact on the detection of a headset. I guess the switch are used to launch a program that could detect the type of the audio device plugged (headset with mic, headset without mic…)

6.0 marshmallow – Timer stops without a sound (not every time)

I want understand such a situation. Timer in the standard watch application used to behave unstable. The situation was such that when I started the timer for the first time (after last turning on the phone), the timer sound wasnt not working at the end of time (only silent notification on the top). Another situation was that the sound was sounding for one second and then suddenly stopped. It was usually the next time after the silent case. And after that the sound could work properly.
It seems to me that clearing the cache and application data helped to solve the problem. But why did this happen? I can well expect this to happen again in the future. The only option I changed was turning off the vibration in timer settings.
My phone is LG Spirit 4G LTE (LG-H440n), Android 6.0

Phone wasn’t in the silent mode,
All volume sliders were up,
No task killer

graphics card – GPU makes a beeping sound when reaching high clock frequency or moving cursor around

I have searched everywhere and it all points to coil whine, but I’m not quite sure yet.

The beeping noise happens when I move my cursor around in desktop, but not if I move it on any other windows/programs. Same with clock frequency, it increases to 1900+MHz when I move the cursor in my desktop background, but not when I’m moving it inside a window (like a browser, notepad etc)

What could the problem be? And how do I solve it?
The GPU is still under warranty, however due to GPU stock shortages, I want to avoid RMAing it without necessity.
The GPU in question is an MSI RTX 3090 Gaming Trio

Here is the video (headphones recommended so you can hear the beeping sound):

Web Domain hosting for Learning about Sound Frequencies

I was able to get a web domain to host A Sound Frequency Study that was taking place. The Sound Frequencies that were played were able to effectively enhance the brain and more axons and neurons were growing in the neural pathways. The info for the web domain is at

reminders – How can I get a text message sent from myself, to myself, to sound an alert?

I am scheduling texts to myself to make absolutely certain I don’t miss certain meetings. The Reminders app is way too subtle, but a text message with a custom text tone, would work great.

The trouble is, automating a text with a calendar alert works but always sends as me, to me. Which means no sound is triggered. I’ve even set my custom text tone and it doesn’t matter, no sound will ever trigger.

Is there any way to have a text message sent in Messages from my mac, to my phone, trigger a sound on the phone?