What is a reasonable sampling rate?

An audio frame is the group of audio samples for an instance of time that come from one or more audio channels. The most common values for the sampling rate is the aforementioned 8kHz (most common for telephone communications), 44.1kHz (most common for music CDs), and 48kHz (most common for audio tracks in movies).

What is data acquisition in HPLC?

Publisher Summary. The tota1 computer processing of liquid chromatography data consists of two parts—data acquisition and data processing. Data acquisition requires that the output from the computer is scaled to a suitable voltage that will permit analog to digital (A/D) conversion.

What is time constant in HPLC?

The Time Constant (or Filter Time Constant) is a noise filter that helps achieve good signal-to-noise ratio by filtering out high-frequency noise. A Time Constant filters data points across the entire chromatogram, so be careful to not use too high of a Time Constant or it will result in distorted peaks.

How do you calculate sampling rate?

The sampling frequency or sampling rate, fs, is the average number of samples obtained in one second (samples per second), thus fs = 1/T.

How to calculate the sampling rate for HPLC?

HPLC HINTS and TIPS FOR CHROMATOGRAPHERS. (a) If your narrowest peak has a peak width of 1.00 minute (60 seconds), then divide 30 points into 60 seconds for a result of 2 seconds per data point. The preferred sampling rate would be 2 seconds, 0.03 minutes or 0.5 Hz (depending on the units used by your detector).

Can a sampling rate of 50Hz be too low?

A sampling rate that is too low could broaden your peaks with loss of resolution. Depending on the application, there is always a ‘sweet spot’. 50 is probably overkill though. A typical GC peak is about 3seconds wide, so with a sampling rate of 50Hz you’d have about 150 datapoints across your peak.

How to calculate the sampling rate for data?

This data can often be read directly off of a generated data acquisition report. (a) If your narrowest peak has a peak width of 1.00 minute (60 seconds), then divide 30 points into 60 seconds for a result of 2 seconds per data point.

How many datapoints are in a 50Hz sampling rate?

Depending on the application, there is always a ‘sweet spot’. 50 is probably overkill though. A typical GC peak is about 3seconds wide, so with a sampling rate of 50Hz you’d have about 150 datapoints across your peak.