Facebook
Twitter
LinkedIn
YouTube
Apps
Mac
iOS
Apple TV
Store
Support
About
Blog
Welcome,
Guest
. Please
login
or
register
.
1 Hour
1 Day
1 Week
1 Month
Forever
Login with username, password and session length
News:
Home
Help
Search
Login
Register
Faber Acoustical Forum
»
Faber Acoustical iOS Apps
»
SignalScope Pro
»
Horizontal Axis
« previous
next »
Print
Pages: [
1
]
Author
Topic: Horizontal Axis (Read 6298 times)
0 Members and 1 Guest are viewing this topic.
Jason
Newbie
Posts: 2
Horizontal Axis
«
on:
August 21, 2009, 02:15:27 AM »
Hi.,
My iPhone is 2G OS 3.01.
Run SSP FFT Analyzer , This Horizontal Axis at 0.0KHz~4.0KHz Only, Why ever?
How do seting to 0~20KHz axis.
Thanks,
Jason
Logged
FaberAST
Administrator
Sr. Member
Posts: 319
Re: Horizontal Axis
«
Reply #1 on:
August 24, 2009, 09:22:52 AM »
Hello Jason,
If you use the built-in microphone on the 2G iPhone, the sample rate is limited to 8 kHz, which is why you can only analyze signals up to 4 kHz. If you use a headset microphone, or a dock connector input, the sample rate will be 48 kHz, so you can analyze signals up to 24 kHz.
You might want to read some of the related articles on the blog, starting with the entry about
iPhone OS Audio Routes
.
Ben
Logged
Jason
Newbie
Posts: 2
Re: Horizontal Axis
«
Reply #2 on:
August 26, 2009, 07:33:41 AM »
Hi.. Ben
Thanks for the help.
Jason
Logged
Print
Pages: [
1
]
« previous
next »
Faber Acoustical Forum
»
Faber Acoustical iOS Apps
»
SignalScope Pro
»
Horizontal Axis
Cookies help us provide you a better browsing experience. By using our site, you consent to the use of cookies by us.
OK
Learn more