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トーンコントロール回路

アンプなどについている、Treble/Bassのことです。前から使っているTRIO TW-31の周波数特性がなにかおかしいので、 プリアンプ段についているCR型トーンコントロール回路を見直したところ、回路が逆に実装されているようでしたので、 10k、50k、100kの可変抵抗を用いた回路を再実装しました。

減衰が大きいので、両側にバッファアンプが必要となります。ボリュームはAカーブで、中央で15%程度を基準として作ってあります。 基本的には、C/Rの上下比がボリュームの抵抗比と同じになるようにすればよいはずですが、系列の中の数値を選ぶ必要があるので、 少々難しいかもしれません。

LTSpiceのファイルもありますので、簡単にシミュレーションできます。

TRIO TW-31オリジナル回路

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LTSpice

TRIO TW-31オリジナル回路を反転させたもの

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LTSpice

10k使用

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50k (1)

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LTSpice

50k (2)

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50k (3)

TRIO TW-31に再実装した回路です。一部回路面の変更が必要となりました。

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LTSpice

100k

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LTSpice

          <rindolf>  dazjorz: I considered switching my default nick to
                     "shlomif", because that's how most people know me.
          <dazjorz>  rindolf: yeah, it's your alternative nick now right?
          <rindolf>  dazjorz: but then XChat2 reverted to the old nick and
                     I was too lazy.
           <unreal>  You seem to have many, well, stupid friends, rindolf
                     :P
          <rindolf>  dazjorz: yes, I have it registered.
          <rindolf>  unreal: stupid?
              <Zuu>  rindolf, noo! what to do about the tomato then? fish
                     dont have big tomato noses!
          <rindolf>  Zuu: fish?
          <rindolf>  Zuu: I'll give you a tomoato.
              <Zuu>  good question
          <rindolf>  I'll give you the tomato back.
              <Zuu>  where do i get fish from
              <Zuu>  no no, keep it :D
          <rindolf>  Zuu: my last name is Fish.
                  *  tommy_the-dragon slaps zuu with a fish
 <tommy_the-dragon>  there ya go
          <dazjorz>  rindolf: I just registered 'sjors'
                  *  rindolf gives a fish to Zuu
          <dazjorz>  rindolf: as a nick.
              <Zuu>  rindolf, thats just absurd, a reindeer with 'fish' as
                     surname...
              <Zuu>  your parents must have hated you
          <rindolf>  Open source: "everyone contributes a fish, and in
                     exchange everyone gets their own ocean."
          <rindolf>  dazjorz: ah, cool.
              <Zuu>  tommy_the-dragon, does dragons eat other animals,
                     like fish?
           <unreal>  Ocean == Big Momma's Bath?
          <rindolf>  Zuu: I'm not a reindeer - I just play one on T.V.
 <tommy_the-dragon>  not fish...
 <tommy_the-dragon>  just reindeers
              <Zuu>  tommy_the-dragon, what about fake TV reindeers ?
              <Zuu>  Nice :D
          <rindolf>  unreal: no, the whole enchilada.
          <rindolf>  tommy_the-dragon: LOL.
 <tommy_the-dragon>  and enchiladas
          <dazjorz>  rindolf: I know someone whose nick is Stonehead, he
                     made his three-letter acronym stn, but usually it's
                     letters from the first name
          <dazjorz>  uh
          <dazjorz>  the full name
          <dazjorz>  yours could be shf for example, and everybody would
                     know "hey, that's shlomi"
          <dazjorz>  but I'm at most sg, so I need to borrow another
                     letter somewhere, or make it daz or just sjors
                  *  dazjorz thinks
 <tommy_the-dragon>  my cat eats flies...
          <rindolf>  dazjorz: I hate these three letter acronyms.
              <Zuu>  shlomi really sounds like some dish made of reindeer
 <tommy_the-dragon>  but hes lucky because i dont eat cats
          <rindolf>  Zuu: heh.
           <unreal>  heh
          <rindolf>  tommy_the-dragon: I didn't know dragons had cats.
          <dazjorz>  what's the name of the red-nosed reindeer again?
              <Zuu>  it sounds edible at least
          <dazjorz>  oh rudolf :)
          <rindolf>  dazjorz: Randolph.
          <dazjorz>  oh
           <unreal>  I used to have a friend whos nick was "crap"
          <rindolf>  unreal: wow.
          <dazjorz>  <someguy> crap, someone stole my bicycle
          <dazjorz>  <crap> ok?
          <rindolf>  dazjorz: heh.
          <dazjorz>  rindolf: why don't you like the three-letter
                     acronyms?
          <rindolf>  dazjorz: often too confusing.
          <rindolf>  dazjorz: and two easy to mistype.
          <rindolf>  dazjorz: and not too memorable.
           <unreal>  LIS.
          <dazjorz>  three easy to mistype, I think
          <rindolf>  And often hard to pronounce.
          <dazjorz>  maybe I'll just go with sjors
          <rindolf>  too easy. Freudian.
          <rindolf>  dazjorz: yes, I think that's a good idea.
           <unreal>  (Lies, I say!)
          <dazjorz>  hehe, rindolf++ # freudian
              <Zuu>  or you could pick something girly and hope people
                     will treat you nicer :)
          <rindolf>  dazjorz: have you played with the farnsworth bot yet?
          <rindolf>  Zuu: RinGirl
          <rindolf>  Though nicks with "Girl " in them tend to draw too
                     much attention.
              <Zuu>  nah, it cant contain 'girl' that just seems fake
          <dazjorz>  rindolf: I have
          <dazjorz>  rindolf: remind me to fix knotify, khtml, and quassel
                     :(
          <rindolf>  dazjorz: nice.
          <rindolf>  dazjorz: using MemoServ?
          <dazjorz>  rindolf: the bugs annoy me, a lot, but I never get
                     around to actually trying to fix them
          <rindolf>  Zuu: maybe I should call myself "shlomi". Americans
                     will think I'm a girl.
              <Zuu>  yeah, it kinda have a girlish sound to it
          <dazjorz>  rindolf: call yourself shloma, dutch people will
                     think you're over sixty and female
          <rindolf>  dazjorz: heh.
          <dazjorz>  let me rephase that
          <dazjorz>  dutch people will think you're female... and over
                     sixty
          <dazjorz>  (oma = grandma)
          <rindolf>  dazjorz: ah.
           <unreal>  kloot.
          <rindolf>  In Hebrew nouns that end with "ah" tend to be
                     feminine.
          <dazjorz>  shlomah?
          <rindolf>  Seriously now, if I change my nick it will be to
                     shlomif.
          <dazjorz>  let's change our nicks at the same time
          <rindolf>  Well, in Shlomi's case it would be Shlomith.
          <dazjorz>  I will be sjors, you will be shlomif
          <rindolf>  dazjorz: OK.
                  *  rindolf is now known as shlomif
          <dazjorz>  shit, now I have to
              <Zuu>  what does shlimif even mean ?
                  *  dazjorz is now known as sjors
            <sjors>  Zuu: shlomi = his first name, f = the first letter of
                     his last name
          <shlomif>  sjors: hi.
          <shlomif>  Zuu: shlomi fish.
            <sjors>  hi shlomif
          <shlomif>  Hi sjors
 <tommy_the-dragon>  where does rindolf come into it?
          <shlomif>  sjors: my nick is longer than yours.
              <Zuu>  oh lol, and i just said his name sound girly :P
                  *  Zuu pat pats shlomif ^^
          <shlomif>  tommy_the-dragon: Rindolf was a dwarven warrior I
                     played in AD&D.
 <tommy_the-dragon>  ahh ok
                  *  shlomif gives Zuu his tomato back.
              <Zuu>  :<
          <shlomif>  Since I'm no longer a reindeer.
            <sjors>  shlomif: that's just to compensate against something
                     you have that's way shorter than mine
          <shlomif>  sjors: LOL.
          <shlomif>  sjors++
              <Zuu>  Erhmm.. shlomif! how come there's this big hole in
                     it?
 <tommy_the-dragon>  sorry...
 <tommy_the-dragon>  my bad
              <Zuu>  Hehe
                  *  shlomif doesn't like raw tomatoes.
          <shlomif>  But I eat them with pasta, etc.
          <shlomif>  Or as meat sauce.
              <Zuu>  or in sandwiches
          <shlomif>  sjors: anyway, welcome to ##programming
              <Zuu>  or on reindeer nose
          <shlomif>  sjors: I'll probably revert to "rindolf" after next
                     disconnect.
          <shlomif>  Zuu: after you cook the entire reindeer.
                  *  shlomif is a reindeer cannibal.
          <shlomif>  Well, rindolf is.
              <Zuu>  yes, but he ran away
          <shlomif>  I also like dried and olive oiled tomatoes.
            <sjors>  shlomif: I just changed my clients' settings to
                     reconnect as sjors, too
          <shlomif>  Well, I think I'll go to sleep.
          <shlomif>  sjors: ah.
            <sjors>  shlomif: it'll probably take a while to "adapt" to
                     sjors instead of dazjorz
          <shlomif>  sjors: well, enjoy your new nick.
            <sjors>  and I still have dazjorz.com, and not sjors.anything
                  *  Zuu tugs shlomif in
            <sjors>  thanks ;)
          <shlomif>  Zuu: thanks.
                  *  Zuu quicly squeeses a fresh tomato onto shlomif's
                     nose
            <sjors>  shlomif: sjors.biz and sjors.mobi at most
                  *  shlomif doesn't have rindolf.{com,org,net} etc.
          <shlomif>  sjors: maybe sjors.in
          <shlomif>  I got a shlom.in
            <sjors>  sjors.indahou.se
          <shlomif>  sjors: heh.
            <sjors>  sjors.ac, sjors.ag, sjors.am, sjors.at
            <sjors>  hehe sjors.me
            <sjors>  sjors.pl, too bad i don't really do perl anymore
          <shlomif>  sjors: there's also .sh
            <sjors>  sjors.sh, too bad I don't really do shell script a
                     lot
          <shlomif>  Or .im
            <sjors>  sjors.tv, too bad I don't really watch..
 <tommy_the-dragon>  do you own a mobile?
          <shlomif>  .tv are pretty costly.
            <sjors>  meh I don't like sjors. anyway, so I'll just keep
                     dazjorz for everything
 <tommy_the-dragon>  yeah whats with that (the price of .tv)?
          <shlomif>  tommy_the-dragon: it's the foundation of the economy
                     of Tuvaly.

    -- Reindeers, Tomatoes and Normalising Nicks
    -- ##programming, Freenode

I couldn't think of an interesting
signature to put here... Maybe next time.

	-- One of Nadav Har'El's Email Signatures.


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