{"observation":{"id":"49d88902-4d75-4ccd-b55b-b1388f1a4985","tool":"elevenlabs-voice-isolator","tool_name":"ElevenLabs Voice Isolator","criterion":"voice-preservation","criterion_name":"Voice preservation","criterion_definition":"After cleanup, does the voice still sound natural, or hollow, robotic, underwater, or artifacted?","criterion_evidence_type":"transformation","criterion_rank_role":"decisive","criterion_rank_role_reason":"Noise cleanup is only useful if the speech still sounds natural and intelligible after processing. (3 of 3 judges)","scenario":"outdoor-balcony-birds-vehicles-and-surrounding-noise","scenario_name":"Outdoor Balcony Birds, Vehicles, and Surrounding Noise","group_tag":"background-noise-removal","scenario_description":"A real-world outdoor speech recording captured on a balcony with variable environmental noise such as birds and traffic. It is designed to test performance on more dynamic, unpredictable background sound.","modality":"audio","input_text":null,"input_artifact_refs":[{"alt":null,"url":"https://d3epheqghktydj.cloudfront.net/remove-background-noise-from-audio-and-v-outside-in-balcony-birds-vehicles-and-su-56b20f611781.wav","role":"input","filename":"Outside in balcony birds vehicles and surrounding noise.wav"}],"stresses":["Suppression of variable outdoor environmental noise","Speech preservation in changing acoustic conditions","Reduction of birds and vehicle traffic sounds","Overall enhancement of noisy field recordings"],"verdict":"worked","score":null,"score_total":null,"note":"The processed speech remained natural and clear, without noticeable distortion, robotic artifacts, or tone changes.","evidence_state":"verified","source":null,"artifacts":[{"url":"https://cdn.futuresmart.ai/public/aidemos/62d47aca3a5644e984498ef476e55e58.mp3?v=1","role":"output","alt":null}],"run_id":"189e3005-33f2-4481-924e-334542fcda87","study_title":"Remove Background Noise from Audio and Video Recordings Using AI","study_kind":"generation","research_task":"86ba6cyhe","tested_at":null,"completeness":"input-and-output","input":{"state":"files","text":null,"files":[{"url":"https://d3epheqghktydj.cloudfront.net/remove-background-noise-from-audio-and-v-outside-in-balcony-birds-vehicles-and-su-56b20f611781.wav","filename":"Outside in balcony birds vehicles and surrounding noise.wav","alt":"Outdoor Balcony Birds, Vehicles, and Surrounding Noise","role":"input"}],"modality":"audio","stresses":["Suppression of variable outdoor environmental noise","Speech preservation in changing acoustic conditions","Reduction of birds and vehicle traffic sounds","Overall enhancement of noisy field recordings"]},"tool_page_slug":"elevenlabs-voice-isolator","tool_url":"https://aidemos.com/tools/elevenlabs-voice-isolator","permalink":"https://aidemos.com/evidence/49d88902-4d75-4ccd-b55b-b1388f1a4985","api_url":"https://ai.aidemos.com/v1/observations/49d88902-4d75-4ccd-b55b-b1388f1a4985"},"peers":[{"id":"49295c20-331e-4e34-9a5d-93ed2a810485","tool":"adobe-podcast-enhance","tool_name":"Adobe Podcast Enhance","verdict":"struggled","score":null,"score_total":null,"note":"The voice stayed clear and understandable, but the original vocal tone and natural characteristics were noticeably altered.","artifact_count":2,"thumbnail":"https://cdn.futuresmart.ai/public/aidemos/3b0fcb27834e4421be4fb48f33adedba.wav?v=1","evidence_url":"https://aidemos.com/evidence/49295c20-331e-4e34-9a5d-93ed2a810485"},{"id":"b540dc46-8082-4d9d-b8a8-a4ed0e850b6e","tool":"audo-studio","tool_name":"Audo Studio","verdict":"worked","score":null,"score_total":null,"note":"The cleaned speech remains clear, natural, and understandable, without noticeable voice distortion or robotic artifacts.","artifact_count":2,"thumbnail":"https://cdn.futuresmart.ai/public/aidemos/6a58679998ba40219e823ef829055744.mp3?v=1","evidence_url":"https://aidemos.com/evidence/b540dc46-8082-4d9d-b8a8-a4ed0e850b6e"},{"id":"a9748451-a180-4cc9-93e9-14c88744e046","tool":"cleanvoice","tool_name":"Cleanvoice","verdict":"struggled","score":null,"score_total":null,"note":"Significantly alters the speaker’s tone and voice characteristics, so the cleaned output sounds less natural than the source audio.","artifact_count":2,"thumbnail":"https://cdn.futuresmart.ai/public/aidemos/5cc2bc944d684a23b09413c7b53bbd99.wav?v=1","evidence_url":"https://aidemos.com/evidence/a9748451-a180-4cc9-93e9-14c88744e046"},{"id":"74feb873-a4c7-48e3-b247-ad909d177b44","tool":"noise-remover","tool_name":"Noise Remover","verdict":"worked","score":null,"score_total":null,"note":"Keeps the speaker's natural tone intact in the cleaned outdoor clip.","artifact_count":3,"thumbnail":"https://cdn.futuresmart.ai/public/aidemos/9aa3a83df8db40d2bb69416efd1ad768.wav?v=1","evidence_url":"https://aidemos.com/evidence/74feb873-a4c7-48e3-b247-ad909d177b44"}],"other_criteria":[{"id":"01a4e094-0b2d-49f8-896b-acd0dff6297a","criterion":"handling-different-noise-types","criterion_name":"Handling different noise types","rank_role":"decisive","verdict":"worked","score":null,"score_total":null,"note":"It handled environmental noise, object-movement noise, and continuous ambient air/wind noise effectively in the same recording.","artifact_count":1,"evidence_url":"https://aidemos.com/evidence/01a4e094-0b2d-49f8-896b-acd0dff6297a"},{"id":"cc8b7d7e-a444-4747-a433-530c8391de6c","criterion":"noise-removal-effectiveness","criterion_name":"Noise removal effectiveness","rank_role":"decisive","verdict":"worked","score":null,"score_total":null,"note":"The tool removed chair-movement noise at the start, air/wind noise, and bird chirping around 0:17, leaving a much cleaner final track.","artifact_count":1,"evidence_url":"https://aidemos.com/evidence/cc8b7d7e-a444-4747-a433-530c8391de6c"}],"appears_in":[{"page_type":"ranking","slug":"background-noise-removal","title":"Best AI Tools to Remove Background Noise from Audio and Video Recordings","url":"https://aidemos.com/best/background-noise-removal","binding":"run"}],"same_scenario":[{"id":"49295c20-331e-4e34-9a5d-93ed2a810485","tool":"adobe-podcast-enhance","tool_name":"Adobe Podcast Enhance","verdict":"struggled","score":null,"score_total":null,"note":"The voice stayed clear and understandable, but the original vocal tone and natural characteristics were noticeably altered."},{"id":"b540dc46-8082-4d9d-b8a8-a4ed0e850b6e","tool":"audo-studio","tool_name":"Audo Studio","verdict":"worked","score":null,"score_total":null,"note":"The cleaned speech remains clear, natural, and understandable, without noticeable voice distortion or robotic artifacts."},{"id":"a9748451-a180-4cc9-93e9-14c88744e046","tool":"cleanvoice","tool_name":"Cleanvoice","verdict":"struggled","score":null,"score_total":null,"note":"Significantly alters the speaker’s tone and voice characteristics, so the cleaned output sounds less natural than the source audio."},{"id":"74feb873-a4c7-48e3-b247-ad909d177b44","tool":"noise-remover","tool_name":"Noise Remover","verdict":"worked","score":null,"score_total":null,"note":"Keeps the speaker's natural tone intact in the cleaned outdoor clip."}]}