Sample rate describes how many audio samples represent each second of a signal. It is one part of a format that can also include sample representation, channel count, and the arrangement of those channels.
How the pieces connect
Applications and endpoints need an agreed format at each boundary. When rates differ, software may resample the signal so it can move through the chosen path. Bit depth describes representation precision rather than how often samples occur. These quantities influence data volume and processing, but larger numbers are not an automatic improvement for every source or listening situation.
An everyday example
A recording created at one rate may be played through an endpoint whose shared format uses another. The system can convert between them without changing the original file stored on disk. Likewise, a two-channel stream and a multichannel stream can share the same sample rate while describing different amounts of information per moment.
Reading the information in context
The format displayed in settings is not a complete description of the quality of speakers, converters, source material, or acoustics. Supported choices vary by connection and equipment. When reading specifications, compare the full format and intended use rather than one headline value. This page explains the vocabulary without recommending an undocumented format or promising an audible improvement.
Audio
Note these before you change anything
Useful facts to have to hand while reading about sample rates and audio formats.
- The default playback and recording devices
- Sample rate and bit depth in the device properties
- Enabled enhancements or spatial sound
- Driver name and version, and whether it is a built-in class driver or a vendor one
Audio: Playback (output); recording runs the other way
- Applicationplays a stream
- Audio enginemixes and resamples
- Audio driverbuilt-in class or vendor
- Codec or DACconverts digital to analogue
- Speakers or headphonesanalogue or USB
