5.3.2 Sampling and Quantization in MATLAB
On Wednesday I reviewed 5.1.2.3 Bit Depth and Quantization Error. My day started with playing with MATLAB in hope of finishing up Experimenting with Quantization Error in MATLAB. I feel the language used in those programming exercises instructions is very different from other parts of the text. I've been having a hard time understanding what exactly the exercise is asking me to do. For example, I don't really understand what the average magnitude error is and the process of normalization. Even when I was checking the solution, I still don't quite understand what is going on. The information given in 5.3.2 is very limited for an exercise like this.
5.1.3 Digital Audio Formats and Transmission
This section is mostly informative. It does have practical purposes, but not that applicable to us at this point.
5.1.3.1 Audio Data Stream and Transmission Protocols
The beginning generally talked about the purpose of using transmission protocols, but a specific example with the devices mentioned in the previous chapters and how transmission protocols help might make this chapter not that disconnected from previous knowledge. Overall 5.1.3.1 delivers quite amount of information the readers might need. Just one point I didn’t really like: TOSLINK is for Toshiba-Link, even on its official website it reads like that. The TOShiba-LINK just makes me feel weird.
5.1.3.2 Signal Path in an Audio Recording System
My first impression was that the style of the figure in this part did not go along with any others in this text at all. But it is indeed very easy to read.
5.1.3.3 Digital Audio Types
Table 5.1, Common audio file types, is very helpful. I think to most readers, skimming though this part and referring to this table will fulfill their learning purposes.
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