System and method for adjusting frequency response characteristics of high-pass crossovers supplying signal to speakers used with subwoofers
AssigneeThiel Audio Products
InventorJames Thiel
Life of this patent
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Abstract
A system and method for adjusting the frequency response of a main speaker system used in conjunction with a subwoofer by modifying the input signal in response to user-adjustable settings to compensate for main-speaker effects characteristics in order to produce a desirable blend of the subwoofer sonic output and the main-speaker sonic output.
Claims5
An apparatus for adjusting the frequency response of a speaker system, the apparatus comprising:
- a user interface configured to receive user-adjustable variables indicative of main speaker low frequency characteristics;
- and
- a compensation circuit configured to produce a desired high-pass signal from an input, the compensation circuit comprising:
- a desired transfer function circuit having frequency response characteristics analogous to a desired crossover-main speaker combination;
- an equivalent circuit having frequency response characteristics analogous to a main speaker;
- and
- a deconvolution circuit configured to deconvolve the main speaker characteristics from the desired crossover-main speaker combination characteristics.
A crossover system for adjusting the frequency response of a speaker system, the crossover system comprising:
- a user interface configured to directly receive user-adjustable variables from a user, the user-adjustable variables being indicative of main speaker low frequency characteristics, wherein the user-adjustable variables comprise at least one variable selected from the group consisting of:
- a main speaker low frequency cutoff frequency, a main speaker low frequency damping factor, a speaker sensitivity factor, and speaker enclosure type;
- and
- a compensation circuit configured to produce a desired high-pass signal from an input signal in response to the user-adjustable variables.
A crossover system for adjusting the frequency response of a speaker system, the crossover system comprising:
- a user interface configured to directly receive user-adjustable variables from a user, the user-adjustable variables being indicative of main speaker low frequency characteristics;
- and
- a compensation circuit configured to produce a desired high-pass signal from an input signal in response to the user-adjustable variables, wherein the compensation circuit further comprises:
- a desired transfer function circuit having frequency response characteristics analogous to a desired crossover-main speaker combination;
- an equivalent circuit having frequency response characteristics analogous to a main speaker;
- and
- a deconvolution circuit configured to deconvolve the main speaker characteristics from the desired crossover-main speaker combination characteristics.
A method for adjusting the frequency response of a speaker system, the method comprising the steps of:
- directly receiving user-adjustable settings from a user, the user-adjustable settings being indicative of main speaker low frequency characteristics;
- and
- producing desired frequency response characteristics in response to the user adjustable settings, wherein the producing step further comprises the steps of:
- generating a combined system response from the user adjustable settings, the combined system response having frequency response characteristics of a desired combined system;
- generating an equivalent speaker response from the user adjustable settings, the equivalent speaker response having frequency response characteristics of the main speaker;
- and
- deconvolving the equivalent speaker response from the combined speaker response to produce a compensated response.
Dependencies are inferred from the claim text.