A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
| Term | Main definition |
|---|---|
| harmonic distortion | Normally specified in dBc sometimes in audio applications also specified as a percentage. It is the ratio of the rms signal to the rms value of the harmonic in question. |
| HDMI | High-Definition Multimedia Interface - audio/video interface |
| Hertz | Cycles per second. Unit of frequency. |
| HP-IB | Short range digital communications bus originally invented in the late 1960s by Hewlett-Packard for automatic test equipment. Also known as IEE-488, GP-IB and GPIB. |
| Hz | Hertz - Cycles per second. Unit of frequency. |
