What delay between two audio sources is seen as “noticeable” to most people?

How many milliseconds of audio delay is noticeable?

In one study, listeners found latency greater than 15 ms to be noticeable. Latency for other musical activities such as playing guitar does not have the same critical concern. Ten milliseconds of latency isn’t as noticeable to a listener who is not hearing his or her own voice.

How much delay is audible?

The audible threshold for group delay is about 30 milliseconds, although lower is desirable.

How much latency can the human ear detect?

The ear can detect a time difference as slight as 30 microseconds and smaller differences through training. The maximum time lag for sound generated at one side of the head is around 0.6 milliseconds (see diagram below).

What is audio delay MS?

In audio systems, latency is typically described in milliseconds or distance (feet or meters) of delay. Frequently, DSP latency is a concern in near-field monitoring applications where the processing latency may delay audio to the point where it is perceptible to the listener.

How is audio delay measured?

Measuring Input Latency



One approach is to first determine the output latency using the LED and oscilloscope method and then use the audio feedback (Larsen) test to determine the sum of output latency and input latency. The difference between these two measurements is the input latency.

How does audio delay work?

The most common audio delay issue is the picture lagging behind the audio. This is normally because there is some sort of internal picture processing going on that delays the time it takes for the picture to be rendered. The audio doesn’t have the same processing so it comes out first.

What is the purpose of delay?

Delay is an audio signal processing technique that records an input signal to a storage medium and then plays it back after a period of time. When the delayed playback is mixed with the live audio, it creates an echo-like effect, whereby the original audio is heard followed by the delayed audio.

How do I delay audio?

Then click on the settings button (cog icon button) on your audio input. In the General tab is a section called delay. Adjust the audio delay setting in milliseconds by moving the bar to the right. Or manually typing the delay value in milliseconds into the field.

How do I sync audio delay?

Audio delay adjustments usually range from 0 milliseconds to approximately 250 milliseconds. Check your manual to see if A/V Sync or Audio Delay setting is available on your home theater system.



  1. Set Digital audio out to PCM. Open the Settings menu. …
  2. Change the current A/V sync setting. …
  3. Set Pass through mode to Auto.


Why is there a delay between audio and video?

The most common reason audio and video gets out of sync is due to audio processing speed. Audio often processes a lot faster than video, particularly when it comes to 4K videos. High-resolution video files take up a lot of space, and as a result it can take longer to process a video signal than an audio signal.

How do I fix the audio delay in a video?

2. How to Resolve Android Video Audio Sync Problem?

  1. Step 1: Select the Output Format. …
  2. Step 2: Check for the Audio and Video Sync Value. …
  3. Step 3: Pause the Playback. …
  4. Step 4: Select the Format. …
  5. Step 5: Save the File.


Does arc cause audio delay?

In general, HDMI ARC can cause audio delay. They are designed for specific purposes and do not interact well with every Audio Processor. If you connect your soundbar speaker to a TV with HDMI ARC connection you may experience a slight delay in the speaker’s audio output.

What is Spdif delay?

S/PDIF (Sony/Philips Digital Interface) is a type of digital audio interface used in consumer audio equipment to output audio over relatively short distances. The signal is transmitted over either a coaxial cable with RCA connectors or a fiber optic cable with TOSLINK connectors.

Why is there a sound delay on my soundbar?

NOTE: If the TV is connected to a soundbar or home theater system (with an HDMI cable or optical cable), the sound may be delayed due to audio processing delays in the soundbar or home theater system. In such cases, there are no issues with the TV speakers.

Why does my surround sound have a delay?

Turn off audio and video processing



In particular, look through your soundbar’s menu for equalizer settings, presets like “movie” and “sports” mode, dialogue enhancers and volume levelers, or features like “virtual 3D” surround sound. Turn them all off, and you should find the delay is much smaller, if not eliminated.

What does audio delay mean on Samsung TV?

With the adjustable audio delay setting of the Samsung TV set to default (“40”), the streamer signal might arrive 40-50 ms earlier in the hearing aids than the signal from the TV speakers. To sync the audio from the TV Connector and the TV speakers- enter the audio settings menu and adjust the TV delay to 100ms.

Why is there a delay between sound and picture on TV?

This issue can occur if the audio format of the HDMI® device connected to the TV is set to bitstream output (Dolby Digital, Dolby Digital Plus, DTS, etc.). To help resolve this issue, change the audio format of the HDMI device to PCM.