need help with getting arduino mega to play pcm audio internally.

this is my first post so please be patient.
my arduino mega is hooked up to a gsm module, motor shield , coin acceptor, leds, lcd with i2c convertor.
i am trying to add voice. pin 11 is used by motor shield.
i need to make the speaker play mp3 audio encoded in pcm 16 bit 8000hz.
3 or 4 audio files in numerical format that play when specific condition happens…
this library doesnt work i think with arduino mega.
I cannot use sd card shield.
my arduino mega has enough space for all the code and audio data.
How do i set pin for speaker output i can use pin 46.
Which library supports the requirements i have ?

attached below is a code that is seen everywhere, it worked for uno but not for mega, also it doesnt let you specify speaker output pin i think.

arduino query .txt (89 KB)

i was trying with pcm.h library.

i was trying with pcm.h library.

Maybe someone else can help with that.

i need to make the speaker play mp3 audio encoded in pcm 16 bit 8000hz.

MP3 is not PCM. The Arduino isn't powerful enough to decode (decompress) MP3 in real time.

The Arduino can drive a piezo transducer (they are higher impedance) but for a 4 or 8-Ohm speaker you need an amplifier (or a simpler "driver circuit" might work, since the output is actually PWM, not analog) .

my arduino mega has enough space for all the code and audio data.

Do you have external memory for the audio. 16-bits at 8KHz requires 16K of memory for every second of audio.