Audio amplifier

摘要

An audio amplifier may comprise a signal limiting circuit and a power amplifier. The signal limiting circuit may be configured to limit an audio signal received at an input and to provide it as a limited audio signal at an output. The power amplifier may have a supply connection which may be coupled to a power supply unit in order to supply power to the power amplifier. The power amplifier may be configured to amplify a signal, which may be based on the limited audio signal, and to provide it as a level-limited audio signal at an output which may be coupled to a load, so that the load may be operated at limited power. The signal limiting circuit may be configured to produce an audio signal which may be limited depending on the load.

主权项

1. An audio amplifier, comprising:
a signal limiting circuit configured to:
limit an audio signal received at an input; andprovide the limited audio signal at a first output; and a power amplifier comprising a supply connection configured to be coupled to a power supply unit to supply power to the power amplifier, the power amplifier configured to:
amplify a signal based on the limited audio signal; andprovide the amplified signal as a level-limited audio signal at a second output configured to be coupled to a load, such that the load can be operated at limited power, the signal limiting circuit configured to produce an audio signal that is limited based on the load, the signal limiting circuit configured to determine the audio signal based on a function of a prescribable maximum input power of the power amplifier, an output power of the power amplifier and a virtual capacitance.