Correction samplerate

It is important to use filters at the same sample rate as the processor or software, otherwise you may get distorted sound, noises, artefacts,…

Loudspeakers.audio does all calculation and outputs convolution filters at 48kHz only. So if you need other formats (ie resolution or sampling rate), you can use an online audio converter such as https://audio.online-convert.com/convert-to-wav or other external tool (available in any DAW or free tools such as sox).