Blue Box5.1.3 - App Store

Blue Box is utility for encoding and decoding DTMF (Dual-Tone Multi-Frequency) or Touch Tone signals.

Generate tones by using the phone style keypad or decipher tones using the device’s microphone.

Tone combinations can be played back with adjustable tone, delay and pause lengths and volume.

Choose from US, UK and Europe based systems.

Enable Multi-frequency tones, which were a precursor to DTMF. Additional trunk control signals will be available including KP, ST1, ST2, ST3, KP/ST2.

Additional tones include the Dial Tone, Ring Back Tone, Busy Signal and 2600Hz. A comma can be used as a pause character to provide extra time between tones during playback.

Save and organize any number of sequences for easy recall using the Favorites feature.

Choose numbers from your contacts to display and play back tones.

Share an encoded or decoded number with the Phone, FaceTime or Messages app.

Use Red Box mode to play coin tone sequences, including 5¢, 10¢ and 25¢ for the US system and 10p and 50p for European systems.

Create a custom tone with control over individual frequencies and volumes. The custom tone can consist of any number of on and off pulses and can optionally be continuous.

Record interactions with the encoder and play them back with the same timing. The recording feature works with all tones, including the dial tone, busy signal, ring back tone, 2600Hz and coins and trunk control tones.

A help manual is including, with step-by-step instructions for all features. When the app is first run, pop-ups will be displayed indicating what the controls are used for.

Warning: Blue Box is designed as an educational tool and utility. Do not attempt to use Blue for any illegal or malicious purposes. Blue Box can be used to assist in dialing numbers, but can not be used to manipulate digital telephone utility services.

Limitations: Blue Box is software based decoding and is processor intensive. Performance may vary between devices. Tones that are less than 100 ms with pauses that are less than 100 ms are difficult to process in software. Future versions and processors may increase the reliability of faster tone sequences. If you need touch tone decoding for higher speeds, a hardware solution is recommended.

Blue Box can not play tones into the iPhone phone feature while in a call.

Blue Box is useful for entering numbers into touch tone operated systems such as an answering machine passcode or a dial-up service that requires the entering of several touch tones to navigate a menu system. Simply enter the numbers once and then play back the numbers into the phone's microphone with a touch.

Version History The audio category was changed to ignore the mute switch. 5.1.3 09/21/2023 Fixed an issue that could cause a crash while trying to play empty recordings. 5.1.2 09/18/2022 New Feature: Added "Custom Tone Settings" option to favorites. When enabled, a volume, tone duration, delay and pause duration can be assigned to the favorite. When the favorite is used, the tone settings will be assigned to the playback settings. If not enabled, the current playback settings will be used.

Minor bug fixes and optimizations. 5.1 08/16/2022 Totally rewritten.
New user interface.
Improved decoding.
It is possible to adjust the volumes for the custom frequency, as well as add any number of on and off pulses.
Send numbers to the Phone, FaceTime or Messages app.
New Recording feature makes it possible to record any interactions and play them back with the same timing. The recording feature works for all tones.
Added Attack/Decay setting to fade tones in and out.
Added informative pop-ups on first launch to explain the user interface.
Upgraded support feature to assist in provided feedback to customer support.
Searchable help feature. 5.0 07/17/2022 Added the privacy message for microphone use during DTMF decoding. This prevents a crash in iOS10 when the decoding button is pressed.
Minor bug fixes and optimizations. 4.1.1 12/02/2016 Added URL Scheme BlueBox://### 4.1 07/15/2014 Ring back tone and busy signal use on/off times like actual tones.
Added US, UK, EUR options for selecting different tones for different locations. These options affect the busy signal and ring back tones.
Listening mode can be selected to listen to either operator tones or customer tones.
Listening mode can be selected to listen to US, UK or EUR tones.
Listening mode has two calibrate buttons to help determine best trigger volumes based on ambient noise or playing tone volumes.
Added audio waveform display area during listening mode.
Updated listen mode to better decipher tone combinations.
Updated UI for iPhone 5 display.
Added HTML help file.
Added 10 and 50 pound coins to red mix mode for UK customers. 4.0 03/06/2014 KP, ST, ST2, ST3, KP/ST2 characters are displayed and can be saved to favorites.
When editing number sequence for favorites, keyboard presented is the touch tone keypad. 3.1 03/09/2012 Added ST, KP, ST2, ST3, KP/ST2 buttons.
Recognizes ST, KP, ST2, ST3, KP/ST2 DTMF combos
Added Operator OR Customer DTMF combos option
Updated manual
Interface Updated 3.0 01/12/2012 Fixed display of numbers in iOS5
Optimized DTMF decoder
Added Stereo/Mono option, was just stereo
Minor Interface changes
Various optimizations 2.1 12/16/2011 Blue Box now includes a red box. Change to red box mode to generate coinage sounds.

Added new tone buttons for 2600Hz, dial tone, busy signal, ring back tone and a custom tone combination.

UI changes to accomodate new features in the same space. 2.0 04/21/2011 1.0 09/20/2010