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<1234567…34>
  • New SpeccyDo you think someone should go about creating a new spectrum computer? I'm talking about a spectrum compatible (not an emulator) with the capabiliti…

    ... are capable of playing 4-bit samples by fiddling with a single ... component of the signal (the samples) proportional to the time ... bandwidth. They talk about achieving 6-bit samples but the effective bandwidth of ... beeper sounds better than a 6-bit DAC on a SID ...
    Alcoholics Anonymous Alcoholics Anonymous October 2003 Sinclair Miscellaneous
  • Amiga MOD on ZX SpectrumWell, there were several question about music matters on WOS lats times, so I decided to describe some of my 'adventures', heheh, with MOD playing on…

    ... lookup table for volume and 6-bit samples from each channel. I decided ...
    2 channels = 517 T = 6.7 kHz
    3 channels ... sample
    ld a,(bc) ; 6 bit sample
    lsbtbl:
    add ...
    Alcoholics Anonymous Alcoholics Anonymous April 2004 Sinclair Miscellaneous
  • Amiga MOD on ZX SpectrumWell, there were several question about music matters on WOS lats times, so I decided to describe some of my 'adventures', heheh, with MOD playing on…

    ... , you could still play the samples one octave lower without sacrificing ... out any advantage playing 8 bit samples has over MQM's 4 ... -bit work.

    I'm ... sample
    ld a,(bc) ; 6 bit sample
    lsbtbl:
    add ...
    Alcoholics Anonymous Alcoholics Anonymous April 2004 Sinclair Miscellaneous
  • Programming Sound EffectsHi guys, Have decided, probably due in some way to my midlife crisis, to tart up and re-release (or even just re-lease) the old 48K Speccy games I w…

    ... fancy, you can do 4 bit samples through the AY chip. If ... can sort-of-do 8 bit samples through the AY chip (see ... on the beeper means 1-bit samples which can sound really noisy ... can go as high as 6.5 bit samples or so but you ...
    Alcoholics Anonymous Alcoholics Anonymous October 2004 Development
  • Samples on ZXWhat is the easiest way to make a sound sample (e.g. sampled speech)on Spectrum using pc samples? Suppose a have a PC .wav file and I want to transf…

    ... the Spectrum could play 4-bit samples using that technique in which ... PCM that would allow for 6.5 bits (42 levels) on ... amplitude and consequently a higher bit rate.

    Failing that ... drive at different voltages. 4 bit would be most conveniently done ...
    cyborg cyborg April 2005 Development
  • Speech reproduction on the Speccy - 2009 style?Thanks to Chapter 33 of [url="http://www.worldofspectrum.org/infoseekid.cgi?id=2000388"]Super Charge Your Spectrum[/url] by David Webb - "Speech Repr…

    ... for example, to play longer samples.

    Here is converted ... (ADPCM5.H):

    [code];6 bit на nowait машинах и на ...
    Shiru Shiru January 2009 Development
  • which zx-spectrum games uses 1bit sound samples?hi! I'm looking for zx-spectrum games using 1bit sound samples. Compairing with msx, which has far less games available than zx-spectrum, there are f…

    ... four 2-bit samples (bit 7/6 high/low of first sample, bit 5/4 ... /> nop 4

    loop1 bit 6,c 8 45 cycles
    dec hl 6
    nop 4

    loop2 bit 4,c ... /> dec hl 6
    nop 4

    loop3 bit 2,c ...
    PrinceGaz PrinceGaz October 2011 Games
  • SWIV digitised speech as easter egg?I read in the permission from one of the authors of the game that the game had a "easter egg" with a speech from Aliens. I have never tried it myself…

    ... need to send a beeper bit every 1/8000 of ... the beeper as a 1 bit DAC -- it's either ... simulate. People have done 4-6 bits of DAC resolution on ... s easy to do four bit samples, simply by controlling a channel ... that can approximate a 7 bit dac output. There are ...
    Alcoholics Anonymous Alcoholics Anonymous November 2013 Games
  • Help with 1-bit sampled soundHi all, I've been sent over this way from the CPC Wiki forums as you guys may be able to help me more specifically with a programming query. Firstly…

    ... will also contain several 1-bit speech samples, to give you an ... available memory for storing the samples. If you have a lot ... play it back with effective 6-bit resolution!
    introspec introspec March 2014 Development
  • Help with 1-bit sampled soundHi all, I've been sent over this way from the CPC Wiki forums as you guys may be able to help me more specifically with a programming query. Firstly…

    ... think it's storing 8-bit samples and choosing best playback for ... others) gets the full 8-bit samples. It's not too surprising ... that into two separate 4-bit samples can degrade the maximum sample ... probably practical and getting over 6-bit is hard on a 3 ...
    Alcoholics Anonymous Alcoholics Anonymous March 2014 Development
  • SampleTracker: does it use envelopes or just PWM?Does SampleTracker accomplish its three channel digital audio via pulse width modulation alone or are envelopes involved? As a thought experiment, I …

    ... act as three indepedent 4-bit DAC (one per channel). So ... quite bad.
    Usually, linear samples are recomputed to AY values ... all three channels to single 6-bit DAC.

    It is ...
    catmeows catmeows May 2014 Sinclair Miscellaneous
  • Speccy Vs Amstrad CPC Vs C64I hope no one minds me posting this here as well as in the announcements section. I'll delete it if there is a problem. It's childish fun but can I …

    ... that era can play 4-bit samples. The c64 is slower ... tracker for playing 4-bit sampled music using sampled ... and seems to be doing 6-bit(ish) but I can' ... br />
    7/8-bit sampled music on the AY ... br />
    The extra bit precision comes from noticing that ...
    Alcoholics Anonymous Alcoholics Anonymous December 2014 Games
  • RAM paging and port usageDear users and developers, I'm just trying to find some detail information about RAM paging on the Spectrum 128 and later models, especially those a…

    ... :
    if port 1ffd bit 0 is reset, same as ... br /> if port 1ffd bit 4 is reset, one of ...
    if port 1ffd bit 4 is set, one of ... a 5-bit integer with bits 7:6:2:1: ... we need an additional bit. bits 5,6 and 7 are now ... would be a 6-bit integer with bits 7:6:5:2: ...
    clausjahn clausjahn June 2008 Hardware
  • Help preserving a tapeHi! I got hold of three cassetes each containing unique Greek Spectrum programs of 1983-1984. I managed to tzx two of them but all my attempts of p…

    ... 2465T/2) at byte 69, bit 6
    Standard checksum error< ... /2) at byte 103, bit 1
    Standard checksum ... 18(1431T/2) at byte 6, bit 2
    Continuing at ... /2) at byte 95, bit 3
    Standard checksum ... 1670T/2) at byte 226, bit 6
    Continuing at 5799840 ...
    Pyjamarama Pyjamarama December 2011 MIA/STP/SDP
  • Problem with DIY Kempston Joystick InterfaceHello, Decided to try out Yarek's Kempston joystick interface: [img]http://8bit.yarek.pl/hardware/zx.joystick/kjschem.gif[/img] Having a few issues.…

    ... , also, how does the bit 7, bit 6, bit 5.... exactly work here?
    thomas3120 thomas3120 April 2013 Hardware
  • Power Play Joystick InterfacePower Play Joystick Interface for the ZX Spectrum. This is a Kempston compatible interface. Address decoding Any IO address where A5 is low... …

    ... .
    [code]Pin 1 - bit 3 - Up
    Pin 2 ... Pin 3 - bit 1 - Left
    Pin 4 - bit 0 - Right
    Pin 6 - bit 4 - Fire
    Pin 7 ... br /> ----- - bit 5 - always 0
    ----- - bit 6 - always 0
    ----- - bit 7 - always ...
    1024MAK 1024MAK July 2017 Hardware
  • [newbie warning :)] Spectrum +3 questionsHello all, Yes, I am a Speccy newbie [img]/__forums/images/smiles/icon_smile.gif[/img] My Spectrum +3 arrived today, and I already have a few questi…

    There is SQ Tracker which is far better than Soundtracker and then there is Sample Tracker which uses 4-bit samples...
    Mikie Mikie December 2001 Sinclair Miscellaneous
  • Need HLP with making MIA TZX from damaged tapesCan anybody help me and tell me the easiest way to transfer the games from tape to TZX. I tried with STL 2.00, making VOC and then using the voc2tzx …

    ... maketzx dos version. Only 8 bit samples are supported. I always use ...
    Fraser Fraser May 2003 MIA/STP/SDP
  • Huffman questionI'm pretty sure that the answer to my question is "no", but I just want a second opinion: Is it possible to somehow cram a Huffman decompressor + de…

    ... if I use a 8-bit table, I've only ~100 ... 'll try a 7-bit or 6-bit table, though that will seriously ...
    GOC GOC July 2003 Sinclair Miscellaneous
  • Huffman questionI'm pretty sure that the answer to my question is "no", but I just want a second opinion: Is it possible to somehow cram a Huffman decompressor + de…

    ... if I use a 8-bit table, I've only ~100 ... 'll try a 7-bit or 6-bit table, though that will seriously ...
    Alcoholics Anonymous Alcoholics Anonymous July 2003 Sinclair Miscellaneous
  • I just registered to ask one questionGive me 10 (or more reasons) about why is it exactly that it was better to have a Spectrum instead of a Commodore back in the eighties. And why do yo…

    ... being it is 4 bit samples rather than 1 bit ones (although it ...
    cyborg cyborg August 2003 Sinclair Miscellaneous
  • Text compressionI'm sure I remember seeing a short machine code routine published in a (very random) multi-machine listings magazine way back in the mists of time, w…

    ... , as it'd only need 6-bit binary in the DATA statements ...
    The Mighty Dopethrone The Mighty Dopethrone October 2003 Games
  • Text compressionI'm sure I remember seeing a short machine code routine published in a (very random) multi-machine listings magazine way back in the mists of time, w…

    ... 'd need is confirmation that 6-bit data would be used instead ... of 8-bit.

    e.g. to ...
    The Mighty Dopethrone The Mighty Dopethrone October 2003 Games
  • help in byte mirroring.I need some help. What is the best way to mirror the byte? (for ex. 10010011 -> 11001001) I mean, if there is a simple way to do it (may be with OR, …

    ... bit0 }

    IF Bit 6 != bit 1 {
    bit 6=bit6 XOR bit1
    bit 1=bit6 XOR bit1
    bit 6=bit6 ... XOR bit1 }

    IF Bit 5 != bit 2 {
    bit 5 ...
    Fraser Fraser October 2003 Development
  • TZX format updateHi folks. Following the private communication with Andy I would like to start a discussion on changing the TZX format to reflect new needs and improv…

    ... dictionary - the length of the bit 'words' is based on the ... done by 'phasing' the wave - bit 0 leaves the 'phase' unchanged ... while bit 1 reverses the 'phase'.
    6-bit flag bytes - otherwise you have ...
    Mikie Mikie February 2004 MIA/STP/SDP
  • Amiga MOD on ZX SpectrumWell, there were several question about music matters on WOS lats times, so I decided to describe some of my 'adventures', heheh, with MOD playing on…

    ... play back a single 8-bit sample, and that should give ... can look at mixing multiple samples, and varying pitches. It's ... to it. Next stop - 8 bit samples!
    gasman gasman March 2004 Sinclair Miscellaneous
  • Amiga MOD on ZX SpectrumWell, there were several question about music matters on WOS lats times, so I decided to describe some of my 'adventures', heheh, with MOD playing on…

    ... be improved.

    The bit about averaging four sample values ... mix, the lower the effective bit resolution you get on each ... if each channel is 8 bit, mixing four channels by averaging ... get a single 8-bit sample means each channels is effectively 6 bit.
    Alcoholics Anonymous Alcoholics Anonymous March 2004 Sinclair Miscellaneous
  • Amiga MOD on ZX SpectrumWell, there were several question about music matters on WOS lats times, so I decided to describe some of my 'adventures', heheh, with MOD playing on…

    ... better than any standard 4-bit samples from the Speccy (including the ...
    gasman gasman April 2004 Sinclair Miscellaneous
  • new games you want?some questions about games for Speccy you want to see/play: 1. type? (strategy, action etc) 2. maybe sequel of some cool old game? ;) 3. 48k/128k? 4…

    ... is able to do 8 bit (256 Colors) in normal display ... colors in HAM mode (18-bit color, 6-bit per RGB channel). Palette ... chipset is 16777216 colors (24-bit). The original Amiga chipset (OCS ... ) had 4096 colors (12-bit, 4-bit per RGB channel), of which ...
    AndyHerbert AndyHerbert May 2004 Games
  • COVOX works?My Sprinter "simulates" a COVOX soundcard at port 4Fh, but I don't know how to use it! Can anyone explain to me the process of programming it? (To be…

    ... 1s directly to the beep bit.

    Zanthrax uses a ... sounds like a 5 or 6-bit DAC. The idea behind PWM ... range. To get the 5-6 bit DAC, we can vary the ... you can do is about 6-7 bits and a 21MHz ...
    Alcoholics Anonymous Alcoholics Anonymous May 2004 Development
<1234567…34>

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