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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. josh 💨‏ @steubens7 1 Mar 2020
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      josh 💨 Retweeted chibi-tech ✨ 🧁 ☕️

      no tricks, just famitracker. it's really good!https://twitter.com/chibitech/status/1229722920345202688 …

      josh 💨 added,

      chibi-tech ✨ 🧁 ☕️ @chibitech
      chibi-techの2曲の新アルバム「Crema Binaria」を発売しました! 今回は、ファミコン音源で -=𝘍𝘜𝘛𝘜𝘙𝘌 𝘊𝘏𝘐𝘗𝘉𝘈𝘚𝘚=- の素晴らしい世界を探検します。 デジタル版をぜひ聞いてくださいね!🤎☕️🤍 👇👇👇👇👇👇👇👇 https://chibitech.bandcamp.com/album/crema-binaria … pic.twitter.com/2wAKrBLHsE
      Show this thread
      1 reply 3 retweets 3 likes
    2. chibi-tech ✨ 🧁 ☕️‏ @chibitech 1 Mar 2020
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      Replying to @steubens7

      chibi-tech ✨ 🧁 ☕️ Retweeted chibi-tech ✨ 🧁 ☕️

      mostly no tricks at least! i did do a "proper" mix on the channels + creative liberties with panning (which is typically not possible in a NES), so it's not truly pure output. but for the most part the music can play in a real NES with reasonable sameness!https://twitter.com/i/status/1230814701312856064 …

      chibi-tech ✨ 🧁 ☕️ added,

      2:19
      chibi-tech ✨ 🧁 ☕️ @chibitech
      ところで、これは「雨色の時間」の生(ほとんど)のNSFエクスポートです。(生コーヒー豆!?) 再生エンジンはNSFplay v2.4からです。 出力には色々なファミコン音源のオタクテクニックが使われています😝✨ 例えばDCオフセットが意図的に逸脱する理由を解明してね! 🤎☕️🤍⤵️ https://chibitech.bandcamp.com/album/crema-binaria … pic.twitter.com/Z0wPDZGYK0
      Show this thread
      2 replies 1 retweet 4 likes
    3. 𝖁𝕰𝕼𝕿𝕺𝕽‏ @Veqtor 2 Mar 2020
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      Replying to @chibitech @steubens7

      Is that a crazy DC offset? :D

      1 reply 0 retweets 0 likes
    4. chibi-tech ✨ 🧁 ☕️‏ @chibitech 2 Mar 2020
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      Replying to @Veqtor @steubens7

      it’s intentionally made that way: NES’ output mixing stage has nonlinearity quirks by design. so the song takes advantage of it in various ways (though in the most unobtrusive way that it doesn’t become a clickfest) though of course i clean up the wonky DC on post-production lol

      1 reply 1 retweet 3 likes
    5. josh 💨‏ @steubens7 2 Mar 2020
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      Replying to @chibitech @Veqtor

      was that recording directly connected to the nes? it'll be ac coupled in the tv and the bias will mostly be gone before the speakers

      1 reply 0 retweets 0 likes
    6. chibi-tech ✨ 🧁 ☕️‏ @chibitech 2 Mar 2020
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      Replying to @steubens7 @Veqtor

      it’s off an emulator lol (in this case, NSFplay v2.4 with all the filtering removed, including the high-pass one lol) — mainly to demonstrate what actually goes on internally. i think the NES itself does it’s own DC filtering though (if not whatever recording device is used)

      1 reply 0 retweets 3 likes
    7. Hector Martin‏ @marcan42 2 Mar 2020
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      Replying to @chibitech @steubens7 @Veqtor

      Yeah, almost anything is going to have a DC blocking cap on the audio path somewhere (or likely multiple places). Removing that is how you abuse audio outputs for lasers, lol. Also, it's not famitracker, right? I always assumed you had your own play routines.

      1 reply 0 retweets 2 likes
    8. Hector Martin‏ @marcan42 2 Mar 2020
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      Replying to @marcan42 @chibitech and

      Also, given that video... that's the DPCM DC offset being used to fade the tri/noise channels out, isn't it (TIL that's a thing)? And otherwise using that channel for the deep bass stuff. That's my guess anyway :-)

      1 reply 0 retweets 2 likes
      Hector Martin‏ @marcan42 2 Mar 2020
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      Replying to @marcan42 @chibitech and

      I think I hear a smooth fade out of the noise channel at the point where the DC offset is climbing up, but then discrete fade-in in volume steps afterwards when it does not change.

      4:36 AM - 2 Mar 2020
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      • とぼけがお chibi-tech✨🧁☕️
      1 reply 0 retweets 2 likes
        1. New conversation
        2. chibi-tech ✨ 🧁 ☕️‏ @chibitech 2 Mar 2020
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          Replying to @marcan42 @steubens7 @Veqtor

          yeah the tri/noise/DMC channels share the same internal output line -- & thus all three are affected. (the two NES pulse channels also share their own line w/the same nonlinear mixing effect, but it's way less noticeable -- compared to the former's relative unpredictableness).

          1 reply 1 retweet 1 like
        3. chibi-tech ✨ 🧁 ☕️‏ @chibitech 2 Mar 2020
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          Replying to @chibitech @marcan42 and

          as for the trippy part before the piano solo: it uses a looping chord fade sample carefully made to keep increasing DC bias slowly until it hits the 127 wave position limit of the DMC channel. due to the delta nature of the sample, it continues from the last position as it loops.pic.twitter.com/3bqil6JsKU

          1 reply 1 retweet 7 likes
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