What to do if there is an echo in the installation monitoring pickup

The problem should be with the installation, not with the pickups themselves.

1. The greatest possible way, your pickup is connected to the back-end equipment, such as the MIC interface of the network camera, the normal pickup is connected to the linein interface, you need to adjust the camera software settings.

2. There is a problem with the selected power supply, the voltage is insufficient, and the switching power supply is used, which may cause the sound quality to be very poor, so the linear regulated DC power supply should be selected.

3. The wires and terminals are not reliable, and there will be poor sound quality and small sound. But it's not all noise, 4. The pickup chosen is very poor, but no matter how bad it is, it will not be all humming, and you can rule out that the pickup itself is of poor quality.

2.The wiring method is caused by the problem of the wire (it is recommended to use an all-copper network cable - the cheapest and most applicable).

3.Caused by being too close to the monitoring host.

4.The monitoring machine itself has poor audio support and may cause current interference. That is, the current passes through a lot of equipment, and the current is not clean when it is transmitted to the pickup, so you can go to the pickup with a power adapter voice audio noise reduction The top priority of monitoring the pickup.

The noise of the monitoring pickups comes from circuit noise and ambient background noise. Using an ordinary electret capacitor microphone and a reasonably designed low-noise amplifier circuit, it is easy to control the circuit noise below 30dbspl (equivalent noise level), which is much lower than the ambient background noise. Ambient background noise is a major problem for monitoring pickups, which is complex and difficult to solve.

The key factor that affects whether the voice is bad or not is audible is the signal-to-noise ratio of the voice to the ambient noise. During normal conversation, the statistical average voice intensity at a distance of 1 meter was 66dbspl, and the voice intensity decreased with the increase of distance, and the signal-to-noise ratio of voice to environmental noise also decreased synchronously. When a certain distance is reached, the voice will be "drowned" in the ambient background noise due to the low signal-to-noise ratio.

Echo. There are two situations, one is because there is a horn on the scene, and the sound of the horn is picked up by the phone.

Pick-up to form an acoustic echo. In this case, if you want to remove echo, you must use a pickup with echo cancellation.

The other is because of the acoustic design of the on-site environment.

Bad causes the reflection and refraction of the sound to cause the pickup to pick up a sound multiple times, resulting in a very muddy sound. This is called reverberation.

In Chinese, echo and reverberation can be called echo without strict distinction, but academically the two situations are handled in completely different ways.

Acoustic echo cancellation must use DSP to perform adaptive filtering, and echo cancellation can be performed to distinguish echo from effective speech. There are mature echo cancellation pickups on the market, and you can search for echo cancellation solutions here.

Reverberation must be addressed through the acoustic optimization of the environment.

Buy a better pickup.

How do you connect the pickup line? How do you power the pickups?

Summary. Hello, dear, happy to answer your questions, monitoring can be coupled with pickups,. Monitoring can definitely increase the sound receiving equipment,Normally, the monitoring network of the unit is supported,Of course, the device is supported,It must also be enabled to achieve monitoring。

There are two audio access methods for network surveillance cameras: a, passive pickup is referred to as built-in microphone, which is installed in the camera. b. The active pickup is an interface that needs to be powered separately, that is, the tail line of the camera has an audio input.

I hope my answers can help you, and I wish you a happy life and a safe and joyful Year of the Rabbit.

Can monitoring be coupled with pickups.

Hello, dear, happy to answer your questions, monitoring can be coupled with pickups,. Monitoring can definitely increase the sound receiving equipment,Normally, the monitoring network of the unit is supported,Of course, the device is supported,It must also be enabled to achieve monitoring。 There are two ways to access the network surveillance camera:

a. Passive pickup is referred to as built-in microphone, which is installed in the camera. b. The active pickup is an interface that needs to be powered separately, that is, the tail line of the camera has an audio input. I hope my answers can help you, and I wish you a happy life and a safe and joyful Year of the Rabbit.

Can you take a look at the ** I sent, what kind of pickup should I buy?

Dahua, or Hikvision.

Cables do.

1. Some ** capture cards need to be connected to the CD port on the motherboard, and if it is a DVR, it does not need to be excited. Please plug in the audio input of the video recorder to the audio input of the video recorder.

2. It is possible that you have connected it, but the audio is not turned on on the operation interface, and the DVR is turned on in the settings.

3. Use an active speaker (the recorder tries the audio output of the BNC head all the way, and connects it to the speaker (the two sides of the mouth are different, one side is the BNC head, and the other side is the inch head, regardless of him, cut the transmission layer and connect the transmission layer, and the shield is connected to the shield).

4. The power supply is positively connected to the pickup, the power supply is negatively connected to the shielding layer of the pickup, the shielding layer of the wire is connected to the signal negative (GND or COM port) of the pickup, and the transmission layer of the wire is connected to the signal of the pickup.

5. Careful Zen manuscript operation, there must be no problem...

After the monitoring platform turns off the pickup function of the recording, after the pickup is turned on again, there will be sound in the recording before playback.

Hello, I am happy to serve you and give you the following answers: Reason: When the monitoring platform turns off the pickup function of the recording, it will cause no sound in the previous recording, this is because after the pickup is turned off, the system will no longer collect sound, and the recorded ** is also stored in the system, so there is no sound.

Solution: If you want to play back the previous recording, you need to turn the pickup back on and adjust the pickup settings correctly to ensure that it can collect sound properly. In addition, you should make sure that the setup of the **** device is correct so that the file is correct for the age of the year.

Absolute steps:1Log in to the monitoring platform and turn on the pickup function; 2.

The monitoring system is very important for the pickup function of the recording, if the hail is not set up and used correctly, it will lead to no sound in the recording, therefore, when using the monitoring system, you should ensure the correct use of the pickup to ensure that the recorded ** has sound.