ScopeFIR

Sound editing professionals and audiophiles who prefer to design their own digital filters could be looking for a way to create Finite Impulse Response filters. ScopeFIR is an application that was created primarily for helping users with a solution for designing custom audio filters with FIR characteristics. It will offer a comprehensive array of predefined filters and coefficients for achieving the preferred impulse response.

ScopeFIR provides users with a basic interface that houses an impressive set of frequency response adjustment tools. One will be able to input the preferred number of taps, configure the grid structure and enter specifications for parameters such as the passband upper frequency, passpand ripple or stopband attenuation.

Once the preferred values have been inserted, by clicking the “Design” button, people can preview the signal waveform that corresponds to their settings. Offering a dual display, the application will enable users to view both the inphase filter frequency response and the impulse response. Although the design process can be carried out on an empirical basis, some prior knowledge of FIR is preferable.

Users will be able to control the sampling frequency and set a specific minimum audio level, but most of the application’s adjustments are performed using value input fields. For the sake of ergonomics and handling efficiency, it would have been beneficial for it to also provide adjustment through graphical sliders, knobs or buttons.

Multiple coefficients are supported and people will be able to customize them to meet their requirements. They will be able to export the coefficients, to text, HTML, ASM or binary formats. In spite of its seemingly endless signal adjustments, ScopeFIR’s settings menu is quite minimalist and might not satisfy the requirements of experienced users.

This utility could be a valid choice for users that embrace custom Finite Impulse Response filter creation. It will provide them with a basic interface that shelters numerous numerical entry tools for adjusting the signal waveform. They will be able to access a library of sampling frequency entries and several useful filters aimed at increasing the editing flexibility.