ICT test revision Actual Questions With Correct Detailed Verified Answer.s

ADC - correct answer Analog to digital converter. Converts sound waves into binary signals for a computer to understand DAC - correct answer Digital to analog converter. Converts binary signals into sound waves that your ears can understand. Sampling - correct answer Recording sound at set intervals of time per second. Measured in Hertz. 1 Hertz is how many samples per second? - correct answer 1 Bit rate - correct answer The accuracy of each sample. How many bits are used per second of audio. Bit depth - correct answer Amount of bits of information per sample. More bit depth means higher audio quality. Where are the DAC & ADC stored in a computer? - correct answer Sound card Lossless compression - correct answer A data compression algorithm that looks for patterns in the code and removes the copies of it, stating the amount of times it repeats. Lossy compression - correct answer Data compression method where data is cut out and lost forever. Lowers quality of file. Which frees up more space: lossy or lossless compression? - correct answer Lossy Which compression method is best for a text file? - correct answer Lossless Which compression method is best for a sound file? - correct answer Lossy