Sample Rate Converter with Sample and Hold

A method adapted to develop from a stream of data sampled at a first oversample rate a resampled data stream resampled at a second oversampled rate, wherein the second oversample rate is a non-integer multiple of the first oversample rate, the method comprising the steps of:

• 1.1 developing at least first, second and third sample clock periods at the second oversample rate;
• 1.2 receiving first and second data stream samples at the first oversample rate, the first data stream sample transitioning to the second data stream sample during the second sample clock period;
• 1.3 in response to the first sample clock period, developing a first convolution value as a function of the received data stream sample and a first convolution function defined between the start of the first and the end of second sample clock periods;
• 1.4 in response to the second sample clock period, developing a second convolution value as a function of the received data stream sample and a second convolution function defined between the start of the second and the end of the third sample clock periods;
• and
• 1.5 providing as the resampled data stream:
• 1.5.1 before the first sample clock period, the first data stream sample;
• 1.5.2 during the first sample clock period, the first convolution value at the transition of the first data stream sample to the second data stream sample;
• 1.5.3 during the second sample clock period, the second convolution value at the transition of the first data stream sample to the second data stream sample;
• and
• 1.5.4 after the second sample clock period, the second data stream sample.