INTERACT FORUM

More => Old Versions => Media Center 11 (Development Ended) => Topic started by: Nethog on September 19, 2003, 08:06:02 pm

Title: Strange BPM calculations
Post by: Nethog on September 19, 2003, 08:06:02 pm

I've noticed something a bit strange with the BPM.  After analyzing audio on quite a few imported tracks I noticed that the BPM was somewhere between 70-130.

I then ripped my first CD using MC and noticed that the BPM for the freshly ripped tracks were between 500-1200!

After forcing MC to re-analyze the tracks the BPM dropped into the same range as the imported tracks(70-130).

Bug?

I'm using the 9.1.256 beta.

After further review it appears that the BPM after forcing MC to re-analyze the tracks the BPM is coming out at 1/10th what it was showing after ripping.

Title: Re: Strange BPM calculations
Post by: Matt on September 20, 2003, 09:56:49 am

Must be a bug.  If it doesn't get fixed in one of the next couple of builds, remind us again in the bug thread.

Thanks!

Title: Re: Strange BPM calculations
Post by: friendly on September 20, 2003, 10:06:31 am

I've noticed that the BPM can be very inaccurate.  Fast songs get very low counts and vice versa.  

Good vibes,
Eric

Title: Re: Strange BPM calculations
Post by: shAf on September 23, 2003, 08:45:49 am

Can I ask if BPS isn't simply calculated as:

BPS == ((filesize)x8) / track-time

i.e., == (bits) / (seconds)

Title: Re: Strange BPM calculations
Post by: Matt on September 23, 2003, 09:09:19 am

It's beats per minute -- like how fast you'd tap your foot.

It's not an exact science, but comes pretty close for a lot of music.

Title: Re: Strange BPM calculations
Post by: KingSparta on September 23, 2003, 11:03:27 am

Quote

I've noticed that the BPM can be very inaccurate.  Fast songs get very low counts and vice versa.  

Good vibes,
Eric

Matt has a wooden leg (Old shark\boating injury) so it is a bit slower than it should be.