Audio sounds


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Thread: Audio sounds

  1. #1
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    Default Audio sounds

    Hi,

    I'm making a toy and I need at least four different sounds. I looked at a piezo buzzer and they are expensive to put four on the board. I'm not using a PIC so I don't have the option of doing software routines. My thought at this point is to use a 555 with one piezo buzzer to try and make different sounds by adjusting the timing. Is this a good idea? Is there a chip out there that can help me do what I need to do? Maybe get an inexpensive PIC with PWM or DTMF tones? Any advice is greatly appreciated.

    Thanks,

    Chris
    Last edited by Christopher4187; - 30th March 2009 at 15:16.

  2. #2
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    Wink

    Hi,

    Have a look to HT 2810/2813/2830/2844 or ISD 14xx or 25xx chips ...

    Alain
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  3. #3
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    Ok, so I got an op-amp and tried it. It pretty much worked like crap. I re-checked all of my connections and they looked good but still nothing.

    So, I took out a 16F676 and when I use the "freqout" command along with a 20MhZ resonator, it worked really good. Then I fed the output to a PNP transistor and it was even louder so I think I will most likely use that approach.

    Here is my dilemma. I took a speaker from one of those Motorola talkabout FRS radios. I want to buy about 10 of those speakers but there are no markings on it. Does anyone know what kind of speaker I should look for? 4ohm, 8ohm....frequency range....power rating?

    Thanks in advance for the help.

    Chris

  4. #4
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    I don't think those Motorola ones are fancy, so probably anything in a local overstock place would do.
    Steve

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    There's no problem, only learning opportunities.

  5. #5
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    If you are using a PIC see PIC iPod wav player

    CD mono quality of wav files for voice or sound.
    May be more than you require though.

    Other compiler.


    Norm

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    Quote Originally Posted by Normnet View Post
    May be more than you require though.
    Norm
    Yeah, it's much more then I need and way above my level of expertise. However, I may be able to use that audio chip and I will check it out to see how it works. Also, your speaker (LS1), do you have a part number for that?

    Thanks,

    Chris

  7. #7
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    Quote Originally Posted by Christopher4187
    I may be able to use that audio chip and I will check it out to see how it works.
    I think mister_e also once recommended an audio amp but I didn't catch it at the time.
    Defiantly better than the LM386.

    Quote Originally Posted by Christopher4187
    speaker (LS1), do you have a part number for that?
    No part number.
    Mainly separate front from back with either an enclosure or a front panel.
    I used car speakers for quality but any speaker will output sound.

    Someday I will post a basic version of PIC iPod wav player.


    Norm

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