Tone detection for integrated telecommunications processing

A method comprising:

• performing automatic gain control (AGC) to normalize the power of the tone or voice signal;
• determining the energy of tone or voice signals at specific frequencies utilizing a Goertzel Filter process which implements a plurality of Goertzel filters wherein a core processor including at least four signal processing units execute the Goertzel filters, simultaneously;
• determining whether or not a tone is present;
• and
• if a tone exists, determining what type of tone;
• wherein the four signal processing units operate in parallel to execute four Goertzel filters, simultaneously, and wherein the four Goertzel filters process data frames of the tone or voice signal that are of fixed size.

A machine-readable medium having stored thereon instructions, which when executed by a machine, causes the machine to perform operations comprising:

• performing automatic gain control (AGC) to normalize the power of the tone or voice signal;
• determining the energy of tone or voice signals at specific frequencies utilizing a Goertzel Filter process which implements a plurality of Goertzel filters wherein a core processor including at least four signal processing units execute the Goertzel filters, simultaneously;
• determining whether or not a tone is present;
• and
• if a tone exists, determining what type of tone;
• wherein the four signal processing units operate in parallel to execute four Goertzel filters, simultaneously, and wherein the four Goertzel filters process data frames of the tone or voice signal that are of fixed size.