Simple categories matching wideband:

• source,
• noise,
• information,
• signal,

Members with property wideband:

• video_modulation,
• speech,
• starlight_fig,
• human_voice,
• audio,
• test_item,
• voice,
• receiver_noise,
• thermal_noise,
• white_noise,
• speech_signal,
• noise_generator,
• random_noise,
• channel_noise,
• noise,
• video_signal,
• sound_attack,
• image,
• impulsive_noise,