What is audio jitter?
- Sync jitter: This occurs when synchronization between different devices is not working properly.
- Transmission Jitter: This occurs when the audio signal is sent over an inappropriate transmission line.
- Receive Jitter: Occurs when the audio signal is not properly processed by a receiver.
sampling jitterSampling jitter describes the time deviations that occur when converting an analog audio signal into a digital audio signal. With sampling, the analog audio signal is measured at a specific point in time (the sampling time) and this measured value is stored as a digital value. If the sampling times are not exactly the same but vary slightly, this can lead to sampling jitter. Sampling jitter can lead to sound distortions, especially at high frequencies, since the deviations in the sampling times can lead to errors in the digital reproduction of the audio signal. High sampling jitter can manifest itself in the form of distortion, noise or distortion in the sound image. There are technologies and methods to reduce sample jitter, such as using high quality Analog to Digital Converters (ADCs) with low jitter sensitivity, the use of synchronization methods, the use of high-quality converter clock sources and the use of jitter reduction technologies. In addition to the diverse options for audio processing using various plug-ins, you now benefit from the option of ordering the mastering online from the comfort of your own home and being able to fall back on the technology and know-how of experienced e-mastering engineers.
How is audio jitter noticeable?
- Erratic pops or clicks in the audio signal
- Distortions in the sound image, especially with higher-frequency audio signals
- Problems with the synchronization of audio and video
- Loss of clarity and sharpness in the sound image
- loss on dynamics in the sound image There may also be a general deterioration in the sound quality.
So does jitter affect the sound of audio?Yes, audio jitter can affect the sound of audio. Jitter causes distortions in the audio signal, which can manifest themselves in the form of distorted sound. These distortions can come in the form of noise, distortion, blurring, or a reduction in dynamic range. Jitter can also affect spatial reproduction and the separation of each audio channel. A higher jitter value usually leads to greater distortions in the sound image. It is therefore important to keep jitter as low as possible in order to achieve the best possible sound quality.
How is audio jitter measured?
What are good audio jitter values?
How to avoid audio jitter?
- Use of high-quality, synchronized sources: A common cause of jitter is the use of sources that are not synchronized. Therefore, always use high-quality, synchronized sources, such as master clocks or word clocks, to ensure that the audio signals stay in sync.
- Use of high-quality, galvanically isolated transmission media: Another common cause of jitter is the use of cheap or poor-quality transmission media. Therefore, always use high-quality, galvanically isolated transmission media, such as optical or coaxial lines, to improve the transmission of audio signals.
- Using high-quality audio interfaces: Another common cause of jitter is using cheap or poor-quality audio interfaces. Therefore, always use high-quality audio interfaces that have been specially developed for professional applications and can reduce or even eliminate jitter.
- Use of jitter reduction technologies: Some audio interfaces and A/D converters have built-in jitter reduction technologies that can help reduce or even eliminate jitter.
- Device maintenance and cleaning: It is also important to regularly maintain and clean the devices to ensure that they remain in good working order and the audio signals are free from interference.