Audio Spectrum Analyzer Apps

Isaiah5411 · 12-11-2014, 08:39 AM

Has anyone tried any of the spectrum analyzer apps for iOS to help tune their system?

mathematics · 12-11-2014, 06:11 PM

i have used RTA Lite with a Dayton mic on my iphone with pink noise. works as it should. i believe that mic is like $30 at parts express.

Isaiah5411 · 12-12-2014, 12:50 AM

Thanks!!!

Isaiah5411 · 12-23-2014, 08:26 AM

Ended up downloading the Spectrum Analyzer - Real Time Sound Frequency Analyzer from ONYX Apps. Works great! It also generates White and Pink noise as well as individual tones (50, 100, 200, 500, 1k, 1.6k, 2k, 5k, 10k, and 16k).

https://itunes.apple.com/us/app/spec...490078884?mt=8

But...remember to turn off your engine when running the program. The engine sounds falsely elevate the sub spectrum (under 80hz, especially around 35Hz). Only took me about an hour to figure THAT out.

Rosetta Stoned · 12-23-2014, 10:46 AM

JL Audio has a free iOS app with SPL meter and 1/3 octave spectrum analyzer. It works pretty good and these kind of apps have compensation for the built-in iPhone mic. It's better though to use an external mic made for measurements. I just use a Dayton EMM-6 with my M-Audio USB interface and MacBook for example.

Maybe someone else can chime in with specific measurement mics that work with iOS & apps. Here's a few links I could find. The Dayton iMM-6 is only $18, I need to try that one out myself.

http://www.amazon.com/Dayton-Audio-i.../dp/B00ADR2B84
http://www.sweetwater.com/store/detail/i436Kit/

kaigoss69 · 12-23-2014, 11:20 AM

Below are two measurements using the RTA app (paid version).

First one is using iPhone internal mic. Second one is using external calibrated mic. Big difference, especially on the low end!

Isaiah5411 · 12-24-2014, 08:07 AM

Quote:

Originally Posted by kaigoss69

Below are two measurements using the RTA app (paid version).

First one is using iPhone internal mic. Second one is using external calibrated mic. Big difference, especially on the low end!

Did you have your car running when you ran these? That's how my graph looked when when I THOUGHT I had equalized my subs properly but couldn't figure out why the sub range was so high. It was the rumbling of the engine.

kaigoss69 · 12-24-2014, 10:04 AM

Quote:

Originally Posted by Isaiah5411

Did you have your car running when you ran these? That's how my graph looked when when I THOUGHT I had equalized my subs properly but couldn't figure out why the sub range was so high. It was the rumbling of the engine.

Nope, engine off.

12-11-2014, 08:39 AM	#1
Isaiah5411 Lieutenant Colonel 193 Rep 1,675 Posts Drives: 2008 Montego Blue 328i E93 Join Date: Oct 2006 Location: Modagascar iTrader: (0)	Audio Spectrum Analyzer Apps Has anyone tried any of the spectrum analyzer apps for iOS to help tune their system? __________________ 2008 Montego "330i" /3.0 manifold /AA /Eurobox /PE /Alufelgen CS7 /Macht Schnell /Michelin PSS /XPel "O thou afflicted, tossed with tempest, and not comforted, behold, I will lay thy stones with fair colours, and lay thy foundations with sapphires." (Isaiah 54:11)
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12-11-2014, 06:11 PM	#2
mathematics Captain 71 Rep 994 Posts Drives: 08 328i e93 alpine white Join Date: May 2009 Location: Queens, NY iTrader: (0)	i have used RTA Lite with a Dayton mic on my iphone with pink noise. works as it should. i believe that mic is like $30 at parts express. __________________ iPhone 6 Plus (iTunes library/iTunes radio/Waze, etc) to Airport Express via AirPlay. Toslink out of Airport Express to Helix P-Six DSP. PHD AF 1.C tweeters, PHD FB 4.1 midranges. Jehnert Door Cards and mid-bass'.
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12-12-2014, 12:50 AM	#3
Isaiah5411 Lieutenant Colonel 193 Rep 1,675 Posts Drives: 2008 Montego Blue 328i E93 Join Date: Oct 2006 Location: Modagascar iTrader: (0)	Thanks!!! __________________ 2008 Montego "330i" /3.0 manifold /AA /Eurobox /PE /Alufelgen CS7 /Macht Schnell /Michelin PSS /XPel "O thou afflicted, tossed with tempest, and not comforted, behold, I will lay thy stones with fair colours, and lay thy foundations with sapphires." (Isaiah 54:11)
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12-23-2014, 08:26 AM	#4
Isaiah5411 Lieutenant Colonel 193 Rep 1,675 Posts Drives: 2008 Montego Blue 328i E93 Join Date: Oct 2006 Location: Modagascar iTrader: (0)	Ended up downloading the Spectrum Analyzer - Real Time Sound Frequency Analyzer from ONYX Apps. Works great! It also generates White and Pink noise as well as individual tones (50, 100, 200, 500, 1k, 1.6k, 2k, 5k, 10k, and 16k). https://itunes.apple.com/us/app/spec...490078884?mt=8 But...remember to turn off your engine when running the program. The engine sounds falsely elevate the sub spectrum (under 80hz, especially around 35Hz). Only took me about an hour to figure THAT out. __________________ 2008 Montego "330i" /3.0 manifold /AA /Eurobox /PE /Alufelgen CS7 /Macht Schnell /Michelin PSS /XPel "O thou afflicted, tossed with tempest, and not comforted, behold, I will lay thy stones with fair colours, and lay thy foundations with sapphires." (Isaiah 54:11)
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12-23-2014, 10:46 AM	#5
Rosetta Stoned Second Lieutenant 102 Rep 254 Posts Drives: 2022 M3, 2023 X3 Join Date: Sep 2009 Location: Denver CO iTrader: (2) Garage List 2023 BMW X3 M40i [0.00] 2022 BMW M3 Competi ... [0.00]	JL Audio has a free iOS app with SPL meter and 1/3 octave spectrum analyzer. It works pretty good and these kind of apps have compensation for the built-in iPhone mic. It's better though to use an external mic made for measurements. I just use a Dayton EMM-6 with my M-Audio USB interface and MacBook for example. Maybe someone else can chime in with specific measurement mics that work with iOS & apps. Here's a few links I could find. The Dayton iMM-6 is only $18, I need to try that one out myself. http://www.amazon.com/Dayton-Audio-i.../dp/B00ADR2B84 http://www.sweetwater.com/store/detail/i436Kit/ __________________ MINE: 2022 M3Cx, Sky Grey, Driv/Exec/Park/Laser 1/26 Ordered, 4/26 Prod, 5/4 Assembly, 5/9 Port, 7/11 Transit, 8/3 Port, 8/18 Dealer, 8/25 Delivered WIFE: 2023 x3 m40i
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12-23-2014, 11:20 AM	#6
kaigoss69 Brigadier General 301 Rep 3,969 Posts Drives: '08 335i Join Date: Jul 2008 Location: JAX iTrader: (6)	Below are two measurements using the RTA app (paid version). First one is using iPhone internal mic. Second one is using external calibrated mic. Big difference, especially on the low end! Attached Images __________________ Mobridge DA2 > JBL MS-8 > ARC XDi 600/4 > JBL Gti 408 Mids & Vifa OT19 Tweeters; PG Ti2 1600.5 > Morel HCW-10 & IDMax 15
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