Reasoning about art
“The poet belongs to the form, and the content to the history and reality of his people” (Belinsky; compare Glinka: “The people compose music, we only arrange it”). Consequently, the…

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What is rock and roll, rock and roll history
Rock and roll literally excited the youth of America in the mid-50s of the last century. And then the whole world. And while boys and girls sang along with popular…

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Physics of sound
This text is optional. Especially for those people who are not going to seriously work with sound, but want only in their free time to play the synthesizer and make…

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shades of music

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Recording History

Today, the main recording methods include:
– mechanical
– magnetic
– optical and magneto-optical sound recording
– solid state flash memory recording

Attempts to create devices that could reproduce sounds were made in ancient Greece. In the IV-II centuries BC e. there were theaters of self-propelled figures – androids. The movements of some of them were accompanied by mechanically extracted sounds folding into melodies. Continue reading

Review article for beginner musicians

The training problem is one of the most important, but, unfortunately, the least covered, which often leads to disastrous results in terms of creative growth: without laying the proper basis at the very beginning of the path, it will subsequently be difficult to get on the right track. The first thing you need to decide is how seriously do you plan to master musical science. If the matter is limited to the performance of simple melodies, then, in fact, any device is suitable – regardless of the type of mechanics and the number of octaves. But if your intentions are more thorough, then this is completely different. In such a situation, an instrument with an 88-key (7 octaves) “heavy” hammer mechanics is needed, which, by tactile sensations, is as close as possible to a real piano. The question of choosing a digital piano also requires a responsible approach, especially considering that a model with a high-quality keyboard and realistic sound is, alas, not cheap. Yes, but why not just buy an ordinary piano? – you will take an interest. Ideally, this should be done, only because it takes up a lot of space, needs periodic preventive maintenance and does not allow to output sound through headphones. Not to mention the single “built-in timbre.”

Keyboard Types Continue reading

Sound Perception and Compression

Traditional lossless compression methods (Huffman, LZW, etc.) are usually poorly applied to compressing audio information (for the same reasons as when compressing visual information).

Some lossy compression methods are listed below:
Compression of silence (pauses) – defines periods of “silence”, works similarly to run-length coding.
ADPCM – Adaptive Differential Pulse Code Modulation (the term Adaptive Delta Pulse Code Modulation (ADPCM) is used in Russian literature. For example, the CCITT G.721 standard is from 16 to 32 Kbits / sec:
Encoding the difference between two or more consecutive samples; then the difference is quantized -> when quantizing, part of the information is lost. The quantization is adaptive (changes the parameters depending Continue reading

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