Low Pass Filter Question

[sadboy]

Guys does it really matter to have such a low pass on my final master ??
and if yes then briefly explain why please ....

http://i52.tinypic.com/idvkzm.jpg
screenshot attached...

[Rocksoff]

That's not a filter. That's your incoming signal. The red line above it is the eq. As you can see, it's flat.

[sadboy]

Originally Posted by Rocksoff

That's not a filter. That's your incoming signal. The red line above it is the eq. As you can see, it's flat.

dude i know that. am talking about the signal you're right, that's why i made the circle.....
is it important to have such curve for my master ?

[streetbeats]

Originally Posted by sadboy

dude i know that. am talking about the signal you're right, that's why i made the circle.....
is it important to have such curve for my master ?

Does your master need a low pass filter? If it does then its important.

[The Elf]

That looks like the kind of drop off you get when the source audio is an MP3. Or when MP3s have been used instead of wavs for loops and the like.

[sadboy]

Originally Posted by The Elf

That looks like the kind of drop off you get when the source audio is an MP3. Or when MP3s have been used instead of wavs for loops and the like.

well, in the beginning i thought so but it turned out that all the work fromm this engineer has this same Q shape i just don't know what's so important about it ?

[Dave Rose]

Originally Posted by sadboy

well, in the beginning i thought so but it turned out that all the work fromm this engineer has this same Q shape i just don't know what's so important about it ?

Sometimes in dance music I use a lowpass to get some more headroom and get rid of unwanted highs, but definately wouldn't use it on all of my tracks....not essential. Looks like an mp3 curve to me as well....I never use a filter that steep

[UnderTow]

I doubt it is intentional. Maybe he works at higher sample rates and that is the SRC anti-aliasing cut-off?

Alistair

[SPORT]

I guess this curve done by some mp3 encoders.

[Adam Dempsey]

Originally Posted by sadboy

i just don't know what's so important about it ?

I suspect there's a few of us asking the same thing.

How's it sound?

[sadboy]

Originally Posted by Adam Dempsey

I suspect there's a few of us asking the same thing.

How's it sound?

well it sounds just like any other mastered song but what really interesting about this man's work is the depth and punch of his songs, i mean you hear everything clear even though the song is extremely punched.

[wado1942]

A lot of electronic music guys just download crappy loops and samples off the internet. So that "curve" would have been in his source files, not anything he did.

BTW, this is one reason I'm SO glad I don't do rap that much anymore. I got so sick of people downloading MP3s, looping them and calling it "their music".

[sadboy]

Originally Posted by wado1942

A lot of electronic music guys just download crappy loops and samples off the internet. So that "curve" would have been in his source files, not anything he did.

BTW, this is one reason I'm SO glad I don't do rap that much anymore. I got so sick of people downloading MP3s, looping them and calling it "their music".

well mate, this not a rap music nor a downloaded mp3. this is a final WAV master copy of a project, and the song most likely a vocal thing with choirs, bass and stuff like that

[TRANQUILO]

Indeed for vinyl masters! If you are mastering for vinyl yes you would want a low pass and a high pass filter to optimize vinyl reproduction during the lathing process and to not feed a cutting lathe unessary frequencies as they will turn exceesive high frequency sounds into distortions and too much low end will rumble in the final product. Anything else like a CD or MP3 master doesnt really need any sort of hi or low pass filter unless it is a funky master to begin with...your ears will tell. In The old days the mastering clerk who made your vinyl master took alot of these considerations into making a perfect record, Now you really have to search for the right person who still practices this dying art of laquer record mastering. I have received too many test press' that sound worse than what I had send mainly due to poor vinyl in-house guys who dont know whats up. So these days a ME who preps music for vinyl will have to take those extra steps that a vinyl ME once took....Everything is somewhat mixed up these days with the plethra of vinyl record labels springing up pressing garage band recordings into these squashed clipping distortion reverb discs that sound sub standard due to all these variables not being met...Looks like we have alot of work to do to overcome this trend.

[sadboy]

Originally Posted by TRANQUILO

Indeed for vinyl masters! If you are mastering for vinyl yes you would want a low pass and a high pass filter to optimize vinyl reproduction during the lathing process and to not feed a cutting lathe unessary frequencies as they will turn exceesive high frequency sounds into distortions and too much low end will rumble in the final product. Anything else like a CD or MP3 master doesnt really need any sort of hi or low pass filter unless it is a funky master to begin with...your ears will tell. In The old days the mastering clerk who made your vinyl master took alot of these considerations into making a perfect record, Now you really have to search for the right person who still practices this dying art of laquer record mastering. I have received too many test press' that sound worse than what I had send mainly due to poor vinyl in-house guys who dont know whats up. So these days a ME who preps music for vinyl will have to take those extra steps that a vinyl ME once took....Everything is somewhat mixed up these days with the plethra of vinyl record labels springing up pressing garage band recordings into these squashed clipping distortion reverb discs that sound sub standard due to all these variables not being met...Looks like we have alot of work to do to overcome this trend.

thanks for the explain and if this low pass is so important then where on earth would i have an Equalizer that give me such steeped curve cut ??

[wado1942]

A curve like that could only come from like a 40-pole or greater filter, which is what you'd get from band splitters for psychoacoustic CODECs and anti-aliasing filters. Mastering for vinyl, you'd likely see a 2 or 4-pole filter tops. There's no need for brick wall filters in the analogue domain.

well mate, this not a rap music nor a downloaded mp3. this is a final WAV master copy of a project, and the song most likely a vocal thing with choirs, bass and stuff like that

I'm just saying a lot of people are careless about their sound sources. Maybe it came from a digital keyboard. Maybe he stored some raw tracks as MP3s. Perhaps it came off a 32KHz DAT. I really have no clue without hearing it. A picture is not very revealing. Whatever the cause, I'd be 99% sure it's some byproduct of inferior digital storage.