Sample rate converter
AssigneeKoninklijke Philips Electronics N.V.
InventorsAdrianus Wilhelmus Maria Van Den Enden, Rutgerus Elisabertus Eduardus Franciscus Suermondt, Marc Victor Arends
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Abstract
Sample rate converters are known, and are used to convert a signal with a first sample rate (sampling frequency) into a signal with a second sample rate (sampling frequency). To obtain a flexible sample rate converter with sampling frequencies that are not known beforehand, until now only sample rate converters with very high intermediate sampling frequencies are known. The invention provides a flexible sample rate converter, which is able to handle unknown input and output sampling frequencies. This is achieved by using polyphase decomposition filter means in combination with interpolation means.
Claims7
Flexible sample rate converter comprising a series-arrangement of polyphase decomposition filter means and interpolator means, whereby one side of the series-arrangement is coupled to an input of the flexible sample rate converter for receiving an input signal with a first sampling frequency and the other side of the series-arrangement is coupled to an output for supplying an output signal with a second sampling frequency, and the flexible sample rate converter comprises a single control means for controlling the polyphase decomposition filter means and the interpolation means.
Dependencies are inferred from the claim text.