Sound imitation in music on ZX Spectrum. Features and receptions sound imitation on musical coprocessor AY-8910 .

At a microphone - Siril/4D (a.k.a. oisee).

Some words about the internal device AY-8910 , about generators of tone, noise and bending around, for what and as they are used.

Tracklist:

00. Ivan Bobov (Push) - Special for -=LD=-
01. Ivan Bobov (Push) - Birds in Forest
02. Ivan Bobov (Push) - Steam
03. Ivan Bobov (Push) - TELEFON
03. Casio^Excess Team - Call To
04. IRONMAN - Psevdo-digital

Greetings, on air the third release podcast " Antique Toy " about music created for 8-bit computers ZX Spectrum .

At a microphone Siril/4D .

A release theme - sound imitation on ZX Spectrum .

Actually sound imitation in chip to music it is applied everywhere. The limited possibilities of the musical coprocessor AY-3-8910 assumes its applications for sound imitation to real tools, first of all it is a rhythm section. How it is reached? The coprocessor AY-3-8910 has for this purpose some possibilities so by means of its registers we can operate three generators of tone, their frequency and the loudness, one generator of noise and one generator bending around. Last two generators we can redirect in one of three channels, in right, average and left or in all at once. Bending around, in terms of a computer drawing it that that like the alpha channel (a transparent mask) it limits level of a signal and depending on its form different sounding, from click before smooth change of level of a signal turns out. Or, if the triangular form bending around is established the effect tremollo is gained. If the period bending around to make small enough that with its help probably to receive low sounds of certain tone with a signal of the triangular form which is more interesting to hearing, rather than a rectangular signal of the generator of tone. I told about it to you in the first release.

Well here now you know almost all that is necessary also can distinguish what reception it is used in this or that musical track.

but if all tools in chip music anyhow sound imitation about what I was going to tell to you? About nonconventional sounds for music, those which surround us in an everyday life and have been integrated into a musical fabric of a piece of music on ZX Spectrum .

I Will begin with a track " Birdies ", written Ivan Bobov , as known as Push . This track has been exposed on demoparty Enlight ' 97 .

the Following musical module of this musician is called " Steam ", that is " Steam ". And actively uses the noise generator, representing sounds characteristic for a steam locomotive. And the platform of 9 both 3/4 and Odwards driving off from it the Express train is represented.

Certainly, sounds of a technical origin, for example a call to simulate slightly easier. Two tracks, - the first " TELEFON " authorships all the same Ivan Bobov in which one of channels simulates intonations of the person speaking by phone are devoted phone at once.

Now a fragment of one more musical module devoted to phone. The author Cassio from group Excess , a track has been exposed on демопати Funtop'98 .

A little bit nonconventional sound imitations. The following track of the musician Ironman is called " Psevdo-digital ". The matter is that it simulates sounding digital, that is sampled music on ZX Spectrum . At that time when this track its sounding was written was as a rule very dirty, because of that that at conversion digital samples from other platforms from 16 bit formats in 4 bit, that is with 16 levels of loudness which are accessible ZX Spectrum to the musical coprocessor AY-3-8910 the error bringing in sounding digital noise was supposed, it and is simulated by the following track.

Ironman - "Psevdo-digital ".

By the way, my promise in detail to tell about this musician partially has executed Nodeus in 4th release friendly podcast ZX Chip . And so, he has told about the late period of creativity Ironman when that took a great interest Minimal Techno .

The Fifth release podcast Antique Toy has come to an end, in following release will be 10 times less technical terminology and hardly more music.

Thanks for your attention. Bye!