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Author Topic: ilan po ba signal ng portable music players (like mp3 players,ipod, etc)  (Read 4102 times)

Offline mr.Electro

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ilan po ba signal ng portable music players (like mp3 players,ipod, etc)
« on: February 28, 2009, 01:44:31 PM »
patulong po...ilan po ba or rms peak voltage or range man lang ng input signal of music source na ito (mp3players, ipod , yung portable devices)...at ilan po operating frequency range... tnx sa mga mag reply...  :)
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ilan po ba signal ng portable music players (like mp3 players,ipod, etc)
« on: February 28, 2009, 01:44:31 PM »

Offline WildSwan

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Re: ilan po ba signal ng portable music players (like mp3 players,ipod, etc)
« Reply #1 on: February 28, 2009, 01:56:07 PM »
yung sa iPod nasa website nila ang specs.
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Re: ilan po ba signal ng portable music players (like mp3 players,ipod, etc)
« Reply #1 on: February 28, 2009, 01:56:07 PM »

Offline ~JahBoy~

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Re: ilan po ba signal ng portable music players (like mp3 players,ipod, etc)
« Reply #2 on: February 28, 2009, 02:19:45 PM »
diba standardized yung peak to peak input signal nang small signal music sources like portable devices?... it think nasa 300mVpp to almost 1 Vpp depending on the music source..di lang ako sure nito
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Re: ilan po ba signal ng portable music players (like mp3 players,ipod, etc)
« Reply #2 on: February 28, 2009, 02:19:45 PM »

Offline Woots29

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Re: ilan po ba signal ng portable music players (like mp3 players,ipod, etc)
« Reply #3 on: February 28, 2009, 03:11:18 PM »
ang freq range is 50hz to 17khz typically. i dont know sa ipod at sony
500mW ang nakita kong pinakamalakas na output.
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Re: ilan po ba signal ng portable music players (like mp3 players,ipod, etc)
« Reply #3 on: February 28, 2009, 03:11:18 PM »

Offline rdpzycho

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Re: ilan po ba signal ng portable music players (like mp3 players,ipod, etc)
« Reply #4 on: February 28, 2009, 04:52:26 PM »
input ba? wala naman silang input. ;D

ang output depende kasi sa player, may built in kasing amplifier. kanya kanya sila ng voltage output, madalas power lang ang ibibigay.

pero kung standards sa music, 1V RMS ang line level (pero ang 'karamihan ng Audio ADC, 1Vpp lang ang kaya). kahit sa Audacity, 1.0 ang peak sa graph.
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Re: ilan po ba signal ng portable music players (like mp3 players,ipod, etc)
« Reply #4 on: February 28, 2009, 04:52:26 PM »

Offline ~JahBoy~

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Re: ilan po ba signal ng portable music players (like mp3 players,ipod, etc)
« Reply #5 on: March 01, 2009, 09:12:31 PM »
hehe uu output pala..my bad..hehe... diba may mga devices ,yung mga basic na mp3 players na walang built-in amps..or kung meron man ay napakaliit parin nang output signal niya  :)
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Offline mr.Electro

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Re: ilan po ba signal ng portable music players (like mp3 players,ipod, etc)
« Reply #6 on: March 01, 2009, 09:27:08 PM »
salamat po sa inyu....so ibig sabihin usually power output lang bigay so i have to compute for its output signal voltage and current???  ::)
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Offline mr.Electro

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Re: ilan po ba signal ng portable music players (like mp3 players,ipod, etc)
« Reply #7 on: March 01, 2009, 11:39:45 PM »
by the way....sa speaker...gaano na ba kalakas ang 800mw??? rinig na ba sa buong room??hehe.. at yung sa headset natin ano ba output power nyan  ???
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Offline rdpzycho

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Re: ilan po ba signal ng portable music players (like mp3 players,ipod, etc)
« Reply #8 on: March 02, 2009, 12:01:28 AM »
800mW? depende 'yan sa sensitivity ng speaker, pero mahina 'yan, sa small room at PC sounds pwede na 'yan kung low listening levels lang. para sa Headphone malakas naman masyado 'yan.

para saan ba 'yung requirement ng voltage na output?
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Offline mr.Electro

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Re: ilan po ba signal ng portable music players (like mp3 players,ipod, etc)
« Reply #9 on: March 03, 2009, 06:11:24 AM »
para ma calculate ko po yung max possible na output voltage at power na gamitin ko para sa speaker ko.. ^^ ito na pala speaker ko..pinalitan ko.... 5W-10W 8ohm
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Offline rdpzycho

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Re: ilan po ba signal ng portable music players (like mp3 players,ipod, etc)
« Reply #10 on: March 03, 2009, 10:40:53 AM »
hindi kakayanin ng mp3 player 'yan, unless may amplifier 'yung speaker.
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Offline Woots29

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Re: ilan po ba signal ng portable music players (like mp3 players,ipod, etc)
« Reply #11 on: March 03, 2009, 05:28:57 PM »
powered speaker na lang gamitin mo. hehe
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Offline WildSwan

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Re: ilan po ba signal ng portable music players (like mp3 players,ipod, etc)
« Reply #12 on: March 03, 2009, 05:33:44 PM »
Quote from: Woots29 on March 03, 2009, 05:28:57 PM
powered speaker na lang gamitin mo. hehe

Oo nga.. Sa CDR-King maraming mura. :D
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Offline Woots29

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Re: ilan po ba signal ng portable music players (like mp3 players,ipod, etc)
« Reply #13 on: March 03, 2009, 05:44:57 PM »
wel maraming ganyan kasi na nagtratry na ikabit ung speaker na malaki sa player without using external amps. 32 ohms lang ang kaya nung players samantalang 8ohms ung speaker. marami nagpagawa ng players sa work ko noon, no sound lahat, iisa ang dahilan. nilagyan ng speaker :D
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Offline mr.Electro

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Re: ilan po ba signal ng portable music players (like mp3 players,ipod, etc)
« Reply #14 on: March 03, 2009, 07:06:58 PM »
Quote from: rdpzycho on March 03, 2009, 10:40:53 AM
hindi kakayanin ng mp3 player 'yan, unless may amplifier 'yung speaker.

may amplifier po naman ako na circuit...kabit ko yung player sa amplifier as input then ang output ay yung speaker...
pwede na ba yun??
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Offline rdpzycho

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Re: ilan po ba signal ng portable music players (like mp3 players,ipod, etc)
« Reply #15 on: March 03, 2009, 09:41:43 PM »
yup pwede na 'yun. actually kahit hindi mo na masyadong alamin kung ano 'yung output nung player, pwede mo nang ikabit sa powered speakers 'yun. pero masama na direkta 'yung speaker sa MP3 player, hindi nila kaya 'yun. 'yung 32 ohms earphone parang shorted na rin sa kanila 'yun.
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Offline ~JahBoy~

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Re: ilan po ba signal ng portable music players (like mp3 players,ipod, etc)
« Reply #16 on: March 04, 2009, 08:35:16 PM »
may nabasa akong book...basta portable devices raw ay usually nasa 1mV rms ang output voltage..  ;)
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Offline Woots29

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Re: ilan po ba signal ng portable music players (like mp3 players,ipod, etc)
« Reply #17 on: March 05, 2009, 07:08:31 AM »
Quote from: ~JahBoy~ on March 04, 2009, 08:35:16 PM
may nabasa akong book...basta portable devices raw ay usually nasa 1mV rms ang output voltage..  ;)

baka sa LINE out un. maxadung maliit ang 1mV kung earphone gagmitin.
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Offline ~JahBoy~

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Re: ilan po ba signal ng portable music players (like mp3 players,ipod, etc)
« Reply #18 on: March 05, 2009, 10:52:33 AM »
Quote from: Woots29 on March 05, 2009, 07:08:31 AM

baka sa LINE out un. maxadung maliit ang 1mV kung earphone gagmitin.

ewan pero yan po lagay sa book...1mv music signal from a compact disc players..portable devices...ilan ba dapat signal sa earphones para marinig?? :)
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Offline Woots29

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Re: ilan po ba signal ng portable music players (like mp3 players,ipod, etc)
« Reply #19 on: March 05, 2009, 11:25:29 AM »
1 volt at 8 ohm produces 100mw na sound.

so kapag 800mW ang labas sa portable at earphones karga which is 32 ohms mga 5.2V kelangan
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Re: ilan po ba signal ng portable music players (like mp3 players,ipod, etc)
« Reply #19 on: March 05, 2009, 11:25:29 AM »
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