Add EQ effect for AudioSegment

[anubhav-narayan]

No description provided.

[jiaaro]

thanks, this is a useful and long-overdue feature.

Would you mind making a few aesthetic changes?

• Removing all the extraneous pass statements
• Add spaces around the assignments (e.g., x = 1 instead of x=1 ) and after the commas in argument lists (e.g., _eq(a, b, c))
• Use 4 space indentation

[anubhav-narayan]

I was thinking if I could create a module/library which has tools exclusively for musical applications using pydub and since I have no experience of making a python library could you help me with that?
Please!

[jiaaro]

is #463 included in this PR?

[anubhav-narayan]

Yes it does.